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docs: add comprehensive troubleshooting guide for common project issues (#221)#243
durdana3105 wants to merge 1 commit into
xthxr:mainfrom
durdana3105:docs-troubleshoot

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@durdana3105 durdana3105 commented Jun 9, 2026

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Related Issue

Closes #221

Summary

Added a comprehensive troubleshooting guide covering common development, configuration, testing, authentication, build, deployment, and runtime issues.

Changes Made

  • Added TROUBLESHOOTING.md
  • Documented common errors and solutions
  • Added environment setup verification steps
  • Added testing and debugging guidance
  • Added recovery procedures
  • Added FAQ section
  • Linked the guide from project documentation

Benefits

  • Faster issue resolution
  • Improved contributor onboarding
  • Reduced duplicate support requests
  • Better developer experience

Documentation Coverage

  • Installation issues
  • Environment configuration
  • Authentication problems
  • Build and deployment failures
  • Testing issues
  • Runtime exceptions
  • Debugging guidance
  • Platform-specific troubleshooting

Verification

  • Reviewed markdown formatting
  • Verified documentation structure
  • Confirmed troubleshooting steps are actionable

Summary by CodeRabbit

  • Documentation
    • Added comprehensive troubleshooting guide with solutions for common issues including installation, environment setup, authentication, database problems, development server errors, build failures, testing issues, deployment challenges, and platform-specific concerns. Includes debugging resources and frequently asked questions.

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@durdana3105 is attempting to deploy a commit to the xthxr's projects Team on Vercel.

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Review Change Stack

📝 Walkthrough

Walkthrough

Added TROUBLESHOOT.md, a structured troubleshooting guide covering installation issues, environment configuration, authentication problems, database setup, development server errors, build failures, testing issues, deployment problems, runtime errors, platform-specific configuration, debugging commands, frequently asked questions, and additional resources.

Changes

Troubleshooting Documentation

Layer / File(s) Summary
Troubleshooting Guide
TROUBLESHOOT.md
Complete troubleshooting reference organized into sections addressing installation, environment setup, authentication, database configuration, development server, build, testing, deployment, runtime issues, platform-specific problems, plus a debugging guide with diagnostic commands, FAQ, and resource links.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~10 minutes

Suggested labels

level:beginner, gssoc:approved, mentor:xthxr, quality:clean, type:docs, GSSoC'26

Suggested reviewers

  • xthxr

Poem

🐰 A guide hops through the troublesome night,
With fixes and commands, all gleaming bright,
From database woes to builds that fail,
The rabbit's compiled wisdom shall prevail! 🔧✨

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly and accurately summarizes the main change: adding a comprehensive troubleshooting guide document to the project documentation.
Linked Issues check ✅ Passed The pull request successfully implements all coding requirements from issue #221: adds TROUBLESHOOTING.md covering common errors, resolution instructions, environment setup, testing guidance, FAQ, and recovery procedures.
Out of Scope Changes check ✅ Passed The pull request contains only the addition of TROUBLESHOOTING.md, which is directly aligned with the objectives specified in issue #221. No out-of-scope changes detected.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

✨ Finishing Touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests

Comment @coderabbitai help to get the list of available commands and usage tips.

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Actionable comments posted: 7

🧹 Nitpick comments (7)
TROUBLESHOOT.md (7)

3-17: ⚡ Quick win

Consider making the table of contents interactive.

The current TOC is a plain list. Adding anchor links would improve navigation in this lengthy document.

🔗 Proposed enhancement
 ## Table of Contents
 
-1. Installation Issues
-2. Environment Configuration
-3. Authentication Problems
-4. Database Issues
-5. Development Server Problems
-6. Build Failures
-7. Testing Issues
-8. Deployment Problems
-9. Runtime Errors
-10. Platform-Specific Issues
-11. Debugging Guide
-12. FAQ
+1. [Installation Issues](`#installation-issues`)
+2. [Environment Configuration](`#environment-configuration`)
+3. [Authentication Problems](`#authentication-problems`)
+4. [Database Issues](`#database-issues`)
+5. [Development Server Problems](`#development-server-problems`)
+6. [Build Failures](`#build-failures`)
+7. [Testing Issues](`#testing-issues`)
+8. [Deployment Problems](`#deployment-problems`)
+9. [Runtime Errors](`#runtime-errors`)
+10. [Platform-Specific Issues](`#platform-specific-issues`)
+11. [Debugging Guide](`#debugging-guide`)
+12. [FAQ](`#faq`)
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 3 - 17, The Table of Contents under the "##
Table of Contents" header is a plain numbered list; replace each plain list item
with a Markdown link to its corresponding section header (e.g., change "1.
Installation Issues" to a link like [Installation Issues](`#installation-issues`))
using the slugified header text (lowercase, spaces to hyphens) so readers can
jump directly to each section, and ensure any non-standard headers have matching
explicit anchors or adjusted link targets to keep the links working.

89-91: ⚡ Quick win

Add project-specific guidance for port configuration.

The resolution mentions changing the application port but doesn't explain how. According to server.js, the port can be configured via the PORT environment variable (defaults to 3000).

📝 Proposed enhancement
 #### Resolution
 
-Kill the process using the port or change the application port.
+1. Kill the process using the port:
+   ```bash
+   # Find the process
+   lsof -ti:3000 | xargs kill -9
+   ```
+2. Or change the application port by setting the `PORT` environment variable:
+   ```bash
+   PORT=3001 npm run dev
+   ```
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 89 - 91, Update the "Resolution" section to
include project-specific steps: note that server.js reads the PORT environment
variable (defaults to 3000) and show how to kill the process using the port
(e.g., use lsof or equivalent to find the process and kill it) and how to change
the app port by setting PORT when starting the app (e.g., PORT=3001 npm run dev
or export PORT=3001 before running). Mention the default port 3000 and reference
server.js and the PORT env var so readers know where this comes from.

161-177: ⚡ Quick win

FAQ section could be more comprehensive and project-specific.

The FAQ contains only two generic questions that largely repeat content from earlier sections. A comprehensive troubleshooting guide should include project-specific frequently asked questions based on actual user issues.

❓ Suggested additional FAQs

Consider adding questions like:

  • How do I get Firebase credentials for local development?
  • What is the SESSION_SECRET and how do I generate it?
  • Why am I getting EADDRINUSE errors?
  • How do I enable debug logging?
  • Where can I find the application logs?
  • How do I reset my local database?
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 161 - 177, Expand the FAQ in TROUBLESHOOT.md to
be project-specific by adding entries for common local-dev and runtime issues:
include questions and concise answers for obtaining Firebase credentials,
generating and using SESSION_SECRET, diagnosing and resolving EADDRINUSE,
enabling debug logging, locating application logs, and resetting the local
database; place the new items under the existing "Why is authentication not
working?" / "Why are tests failing?" FAQ block and ensure each entry references
relevant commands/config files (e.g., how to set environment variables, where
credentials live) and links to existing docs or scripts in the repo so users can
act on the guidance.

129-137: ⚡ Quick win

Runtime errors section needs more comprehensive guidance.

The section title promises help with "Application Crashes Unexpectedly," but the resolution only suggests running npm run dev and reviewing logs without providing structured debugging steps or common crash scenarios.

🐛 Proposed enhancement
 #### Resolution
 
-Check:
+1. Check the console output for error messages
+2. Common causes:
+   - Missing or invalid environment variables (especially Firebase credentials)
+   - Port conflicts (default: 3000)
+   - Database connection issues
+   - Unhandled promise rejections
+3. Run in development mode with detailed logs:
 
 ```bash
 npm run dev

-Review logs and recent code changes.
+4. Check for stack traces that identify the failing module
+5. Review recent code changes that might have introduced the issue

</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @TROUBLESHOOT.md around lines 129 - 137, Update the "Application Crashes
Unexpectedly" section to replace the one-line advice with a short, ordered
debugging checklist: 1) run npm run dev to reproduce the crash, 2) capture and
inspect full logs and stack traces to identify the failing module/function, 3)
verify environment variables and configuration files are correct, 4) bisect
recent commits or review recent code changes that touched the failing module, 5)
check for dependency or build issues (npm install, lockfile changes), and 6)
test for resource/port conflicts or memory limits; reference the section title
"Application Crashes Unexpectedly" and include pointers to gather stack traces
and reproduce the issue locally.


</details>

<!-- cr-comment:v1:b0e1d527cd6c6dc1293a4dc1 -->

---

`180-184`: _⚡ Quick win_

**Additional resources section lacks actionable links.**

The resources section lists document names without providing links or explaining what type of help each resource provides.


<details>
<summary>📚 Proposed enhancement</summary>

```diff
 ## Additional Resources
 
-* README.md
-* CONTRIBUTING.md
-* Project documentation
+* [README.md](README.md) - Project overview and quick start
+* [CONTRIBUTING.md](CONTRIBUTING.md) - Contribution guidelines and development workflow
+* [Firebase Setup Guide](docs/FIREBASE_SETUP.md) - Detailed Firebase configuration instructions
+* [GitHub Issues](https://github.com/xthxr/piik.me/issues) - Report bugs or request features
+* [Firebase Documentation](https://firebase.google.com/docs) - Official Firebase docs
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 180 - 184, Update the "## Additional Resources"
section in TROUBLESHOOT.md to replace bare filenames with actionable links and
short descriptions: turn "README.md" into a link labeled with one-line purpose
(e.g., "Project overview and setup"), convert "CONTRIBUTING.md" into a link
describing contribution guidelines and PR/issue process, and change "Project
documentation" into a link to the docs site or docs index with a brief note
about what is documented; ensure the header "## Additional Resources" and the
three bullets are edited accordingly so readers can click through and know what
help each resource provides.

73-75: ⚡ Quick win

Authentication guidance is too generic for this Firebase-based project.

The resolution "Verify authentication configuration and environment variables" doesn't provide actionable steps. According to .env.example, this project uses Firebase Authentication with specific required variables (FIREBASE_API_KEY, FIREBASE_AUTH_DOMAIN, etc.).

🔐 Proposed enhancement
 #### Resolution
 
-Verify authentication configuration and environment variables.
+1. Verify Firebase authentication environment variables in `.env`:
+   - `FIREBASE_API_KEY`
+   - `FIREBASE_AUTH_DOMAIN`
+   - `FIREBASE_PROJECT_ID`
+   - `FIREBASE_MESSAGING_SENDER_ID`
+   - `FIREBASE_APP_ID`
+2. Ensure Firebase Admin SDK credentials are correctly configured
+3. Check that authentication is enabled in Firebase Console
+4. Verify callback URLs match your deployment URL
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 73 - 75, Update the "Resolution" to list
concrete Firebase auth checks: confirm the .env contains the required keys
(FIREBASE_API_KEY, FIREBASE_AUTH_DOMAIN, FIREBASE_PROJECT_ID, FIREBASE_APP_ID,
FIREBASE_MEASUREMENT_ID, FIREBASE_MESSAGING_SENDER_ID) and, for
server/service-account flows, FIREBASE_CLIENT_EMAIL and FIREBASE_PRIVATE_KEY (or
GOOGLE_APPLICATION_CREDENTIALS pointing to a valid service account JSON);
instruct to copy values from the Firebase console (Project settings → SDK setup
and service accounts), ensure no surrounding quotes/newlines are mangled
(especially PRIVATE_KEY newlines), restart the service after updating env, and
add a note to run the included env.example as a template to validate all
required vars are present.

30-41: ⚡ Quick win

Consider adding Node.js version verification.

The dependency installation section doesn't mention verifying Node.js version compatibility, which is a common source of installation failures.

🔧 Optional enhancement
 #### Resolution
 
+First, verify you're using a compatible Node.js version:
+
+```bash
+node --version
+```
+
+Then install dependencies:
+
 ```bash
 npm install
</details>

<details>
<summary>🤖 Prompt for AI Agents</summary>

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In @TROUBLESHOOT.md around lines 30 - 41, Add a Node.js version verification
step to the "Resolution" section: instruct users to run node --version and
confirm it matches the supported range (e.g. specify the project's required
major/minor or point to the engines field), and if mismatched, show concise
remediation (install correct Node version or switch via nvm) before running npm
install or the rm -rf node_modules package-lock.json && npm install sequence;
update the TROUBLESHOOT.md "Resolution" block to include this verification and
remediation step so installers check Node compatibility first.


</details>

<!-- cr-comment:v1:25bdd253284ab2cd81e7e6fa -->

</blockquote></details>

</blockquote></details>

<details>
<summary>🤖 Prompt for all review comments with AI agents</summary>

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @TROUBLESHOOT.md:

  • Line 116: The troubleshooting doc references a non-existent npm test script;
    either update TROUBLESHOOT.md to use the actual project command or add a test
    script to package.json. Locate the "npm test" line in TROUBLESHOOT.md and
    replace it with the correct command used by this repo (or add a "test" entry in
    package.json scripts that delegates to the real test/lint command), ensuring
    consistency between package.json and the guide.
  • Line 1: The file name TROUBLESHOOT.md doesn't match the PR's expected
    TROUBLESHOOTING.md; rename the file to TROUBLESHOOTING.md (e.g., git mv
    TROUBLESHOOT.md TROUBLESHOOTING.md) and update any internal references or links
    that point to TROUBLESHOOT.md so all references now target TROUBLESHOOTING.md.
  • Line 8: The TOC lists "Database Issues", "Deployment Problems", and
    "Platform-Specific Issues" but those headings/content are missing; update the
    document by either removing those entries from the TOC or (preferred) add the
    missing sections named exactly "Database Issues", "Deployment Problems", and
    "Platform-Specific Issues" with concise guidance covering database setup steps,
    common deployment failure modes and fixes, and OS/browser/platform-specific
    troubleshooting; ensure the new sections are referenced correctly by the
    existing TOC entries and include brief examples or commands where appropriate so
    the PR objective (database setup and deployment problems) is satisfied.
  • Around line 145-150: Update the commands list in TROUBLESHOOT.md so it matches
    package.json scripts: remove references to the non-existent "npm run build" and
    "npm test" and replace them with the actual runnable script ("npm start"),
    keeping "npm run dev" and "npm run lint"; ensure the list contains "npm run
    dev", "npm start", and "npm run lint" and verify these script names exactly
    match the keys in package.json.
  • Around line 47-60: Update the "Missing Environment Variables" section to list
    the exact variables the app validates in server.js and their constraints: add
    FIREBASE_PROJECT_ID, FIREBASE_CLIENT_EMAIL, FIREBASE_PRIVATE_KEY, and
    SESSION_SECRET (note SESSION_SECRET must be at least 32 characters). Mention
    copying .env.example to .env.local and ensuring these four variables are
    populated, and restart the dev server; reference server.js as the validation
    source so readers know where the checks occur.
  • Line 57: Update the README step that instructs copying .env.example to
    .env.local so it instead instructs copying .env.example to .env; update
    the text mentioning .env.local to .env and ensure the note aligns with the
    .env usage referenced in server.js and the dotenv loading logic. Verify any
    other references in TROUBLESHOOT.md to .env.local are replaced with .env.
  • Line 102: TROUBLESHOOT.md references npm scripts "build" and "test" that don't
    exist; either add those scripts to package.json or update the doc to use the
    actual scripts ("start", "dev", "lint", "lint:fix"). Fixing options: (A) add
    sensible scripts named "build" and "test" to package.json (e.g., tie "build" to
    your project build step and "test" to your test runner) so npm run build/test
    succeed, or (B) edit TROUBLESHOOT.md to replace instances of npm run build and
    npm test (lines referenced) with the correct commands (npm run dev/npm run start
    and your test invocation) and ensure the doc and package.json remain consistent;
    update both places if you change script names.

Nitpick comments:
In @TROUBLESHOOT.md:

  • Around line 3-17: The Table of Contents under the "## Table of Contents"
    header is a plain numbered list; replace each plain list item with a Markdown
    link to its corresponding section header (e.g., change "1. Installation Issues"
    to a link like Installation Issues) using the slugified
    header text (lowercase, spaces to hyphens) so readers can jump directly to each
    section, and ensure any non-standard headers have matching explicit anchors or
    adjusted link targets to keep the links working.
  • Around line 89-91: Update the "Resolution" section to include project-specific
    steps: note that server.js reads the PORT environment variable (defaults to
  1. and show how to kill the process using the port (e.g., use lsof or
    equivalent to find the process and kill it) and how to change the app port by
    setting PORT when starting the app (e.g., PORT=3001 npm run dev or export
    PORT=3001 before running). Mention the default port 3000 and reference server.js
    and the PORT env var so readers know where this comes from.
  • Around line 161-177: Expand the FAQ in TROUBLESHOOT.md to be project-specific
    by adding entries for common local-dev and runtime issues: include questions and
    concise answers for obtaining Firebase credentials, generating and using
    SESSION_SECRET, diagnosing and resolving EADDRINUSE, enabling debug logging,
    locating application logs, and resetting the local database; place the new items
    under the existing "Why is authentication not working?" / "Why are tests
    failing?" FAQ block and ensure each entry references relevant commands/config
    files (e.g., how to set environment variables, where credentials live) and links
    to existing docs or scripts in the repo so users can act on the guidance.
  • Around line 129-137: Update the "Application Crashes Unexpectedly" section to
    replace the one-line advice with a short, ordered debugging checklist: 1) run
    npm run dev to reproduce the crash, 2) capture and inspect full logs and stack
    traces to identify the failing module/function, 3) verify environment variables
    and configuration files are correct, 4) bisect recent commits or review recent
    code changes that touched the failing module, 5) check for dependency or build
    issues (npm install, lockfile changes), and 6) test for resource/port conflicts
    or memory limits; reference the section title "Application Crashes Unexpectedly"
    and include pointers to gather stack traces and reproduce the issue locally.
  • Around line 180-184: Update the "## Additional Resources" section in
    TROUBLESHOOT.md to replace bare filenames with actionable links and short
    descriptions: turn "README.md" into a link labeled with one-line purpose (e.g.,
    "Project overview and setup"), convert "CONTRIBUTING.md" into a link describing
    contribution guidelines and PR/issue process, and change "Project documentation"
    into a link to the docs site or docs index with a brief note about what is
    documented; ensure the header "## Additional Resources" and the three bullets
    are edited accordingly so readers can click through and know what help each
    resource provides.
  • Around line 73-75: Update the "Resolution" to list concrete Firebase auth
    checks: confirm the .env contains the required keys (FIREBASE_API_KEY,
    FIREBASE_AUTH_DOMAIN, FIREBASE_PROJECT_ID, FIREBASE_APP_ID,
    FIREBASE_MEASUREMENT_ID, FIREBASE_MESSAGING_SENDER_ID) and, for
    server/service-account flows, FIREBASE_CLIENT_EMAIL and FIREBASE_PRIVATE_KEY (or
    GOOGLE_APPLICATION_CREDENTIALS pointing to a valid service account JSON);
    instruct to copy values from the Firebase console (Project settings → SDK setup
    and service accounts), ensure no surrounding quotes/newlines are mangled
    (especially PRIVATE_KEY newlines), restart the service after updating env, and
    add a note to run the included env.example as a template to validate all
    required vars are present.
  • Around line 30-41: Add a Node.js version verification step to the "Resolution"
    section: instruct users to run node --version and confirm it matches the
    supported range (e.g. specify the project's required major/minor or point to the
    engines field), and if mismatched, show concise remediation (install correct
    Node version or switch via nvm) before running npm install or the rm -rf
    node_modules package-lock.json && npm install sequence; update the
    TROUBLESHOOT.md "Resolution" block to include this verification and remediation
    step so installers check Node compatibility first.

</details>

<details>
<summary>🪄 Autofix (Beta)</summary>

Fix all unresolved CodeRabbit comments on this PR:

- [ ] <!-- {"checkboxId": "4b0d0e0a-96d7-4f10-b296-3a18ea78f0b9"} --> Push a commit to this branch (recommended)
- [ ] <!-- {"checkboxId": "ff5b1114-7d8c-49e6-8ac1-43f82af23a33"} --> Create a new PR with the fixes

</details>

---

<details>
<summary>ℹ️ Review info</summary>

<details>
<summary>⚙️ Run configuration</summary>

**Configuration used**: defaults

**Review profile**: CHILL

**Plan**: Pro

**Run ID**: `79a0d1e6-6972-4c81-9eca-0c392923e087`

</details>

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between d8435c7deecdd530a147d18862af1527a74ebc46 and d1389673ccc6221abb92da0da41a84fe5810de22.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `TROUBLESHOOT.md`

</details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->

Comment thread TROUBLESHOOT.md
@@ -0,0 +1,184 @@
# Troubleshooting Guide

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⚠️ Potential issue | 🔴 Critical | ⚡ Quick win

Critical: Filename mismatch with PR objectives.

The file is named TROUBLESHOOT.md, but the PR description and objectives consistently reference TROUBLESHOOTING.md. This discrepancy will break any documentation links or references expecting the full name.

📝 Recommended fix

Rename the file to match the PR description:

git mv TROUBLESHOOT.md TROUBLESHOOTING.md
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` at line 1, The file name TROUBLESHOOT.md doesn't match the
PR's expected TROUBLESHOOTING.md; rename the file to TROUBLESHOOTING.md (e.g.,
git mv TROUBLESHOOT.md TROUBLESHOOTING.md) and update any internal references or
links that point to TROUBLESHOOT.md so all references now target
TROUBLESHOOTING.md.

Comment thread TROUBLESHOOT.md
1. Installation Issues
2. Environment Configuration
3. Authentication Problems
4. Database Issues

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⚠️ Potential issue | 🔴 Critical | 🏗️ Heavy lift

Critical: TOC lists sections that don't exist in the document.

The table of contents promises sections for "Database Issues" (item 4), "Deployment Problems" (item 8), and "Platform-Specific Issues" (item 10), but these sections are completely missing from the document. The PR objectives explicitly state the guide should cover "database setup" and "deployment problems."

📝 Required additions

Either add these missing sections with appropriate content, or remove them from the TOC. Given the PR objectives explicitly mention these topics, adding the content is recommended.

Also applies to: 12-12, 14-14

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` at line 8, The TOC lists "Database Issues", "Deployment
Problems", and "Platform-Specific Issues" but those headings/content are
missing; update the document by either removing those entries from the TOC or
(preferred) add the missing sections named exactly "Database Issues",
"Deployment Problems", and "Platform-Specific Issues" with concise guidance
covering database setup steps, common deployment failure modes and fixes, and
OS/browser/platform-specific troubleshooting; ensure the new sections are
referenced correctly by the existing TOC entries and include brief examples or
commands where appropriate so the PR objective (database setup and deployment
problems) is satisfied.

Comment thread TROUBLESHOOT.md
Comment on lines +47 to +60
### Missing Environment Variables

#### Symptoms

* Application fails to start
* Authentication errors
* Database connection failures

#### Resolution

1. Copy `.env.example` to `.env.local`
2. Fill in all required variables
3. Restart the development server

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⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Major: Missing specific required environment variables.

The section discusses missing environment variables but doesn't specify which ones are actually required. According to server.js, the application validates four required variables at startup: FIREBASE_PROJECT_ID, FIREBASE_CLIENT_EMAIL, FIREBASE_PRIVATE_KEY, and SESSION_SECRET (which must be at least 32 characters). Including these specifics would make troubleshooting much more actionable.

📋 Proposed enhancement
 #### Resolution
 
 1. Copy `.env.example` to `.env`
-2. Fill in all required variables
+2. Fill in all required variables:
+   - `FIREBASE_PROJECT_ID`
+   - `FIREBASE_CLIENT_EMAIL`
+   - `FIREBASE_PRIVATE_KEY`
+   - `SESSION_SECRET` (must be at least 32 characters; generate with `openssl rand -hex 32`)
 3. Restart the development server
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 47 - 60, Update the "Missing Environment
Variables" section to list the exact variables the app validates in server.js
and their constraints: add FIREBASE_PROJECT_ID, FIREBASE_CLIENT_EMAIL,
FIREBASE_PRIVATE_KEY, and SESSION_SECRET (note SESSION_SECRET must be at least
32 characters). Mention copying .env.example to .env.local and ensuring these
four variables are populated, and restart the dev server; reference server.js as
the validation source so readers know where the checks occur.

Comment thread TROUBLESHOOT.md

#### Resolution

1. Copy `.env.example` to `.env.local`

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⚠️ Potential issue | 🔴 Critical | ⚡ Quick win

Critical: Incorrect environment file target.

The instruction says to copy .env.example to .env.local, but the project uses .env (not .env.local). The .env.example file itself states "Copy .env.example to .env and fill in the values," and server.js loads environment variables from .env via dotenv.

🔧 Proposed fix
-1. Copy `.env.example` to `.env.local`
+1. Copy `.env.example` to `.env`
 2. Fill in all required variables
 3. Restart the development server
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
1. Copy `.env.example` to `.env.local`
1. Copy `.env.example` to `.env`
2. Fill in all required variables
3. Restart the development server
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` at line 57, Update the README step that instructs copying
`.env.example` to `.env.local` so it instead instructs copying `.env.example` to
`.env`; update the text mentioning `.env.local` to `.env` and ensure the note
aligns with the `.env` usage referenced in `server.js` and the dotenv loading
logic. Verify any other references in TROUBLESHOOT.md to `.env.local` are
replaced with `.env`.

Comment thread TROUBLESHOOT.md
Run:

```bash
npm run build

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⚠️ Potential issue | 🔴 Critical

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Verify which npm scripts are actually defined
cat package.json | jq -r '.scripts | keys[]'

Repository: xthxr/piik.me

Length of output: 81


🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== TROUBLESHOOT.md (lines 90-120) =="
nl -ba TROUBLESHOOT.md | sed -n '90,120p'

echo
echo "== Occurrences of npm scripts in TROUBLESHOOT.md =="
rg -n "npm (run )?(build|test)" TROUBLESHOOT.md || true

echo
echo "== package.json scripts =="
cat package.json | jq -r '.scripts | keys[]'

Repository: xthxr/piik.me

Length of output: 155


🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== TROUBLESHOOT.md (lines 90-120) =="
cat -n TROUBLESHOOT.md | sed -n '90,120p'

echo
echo "== Occurrences of npm scripts in TROUBLESHOOT.md =="
rg -n "npm (run )?(build|test)" TROUBLESHOOT.md || true

echo
echo "== Occurrences of npm scripts in repo =="
rg -n "npm (run )?(build|test)" . || true

echo
echo "== package.json scripts =="
cat package.json | jq -r '.scripts | keys[]' | sort

Repository: xthxr/piik.me

Length of output: 947


🏁 Script executed:

#!/bin/bash
set -euo pipefail

echo "== TROUBLESHOOT.md (lines 135-160) =="
cat -n TROUBLESHOOT.md | sed -n '135,160p'

echo
echo "== package.json scripts section =="
# Print a small window around the scripts block if present
rg -n "\"scripts\"" package.json || true
python3 - <<'PY'
import json,sys
with open('package.json','r',encoding='utf-8') as f:
    data=json.load(f)
print(json.dumps(data.get('scripts',{}), indent=2, sort_keys=True))
PY

Repository: xthxr/piik.me

Length of output: 720


Critical: TROUBLESHOOT.md references missing npm scripts (build/test).

TROUBLESHOOT.md instructs running npm run build (lines 102, 147) and npm test (lines 116, 148), but package.json only defines start, dev, lint, and lint:fix, so these commands will error with “missing script”.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` at line 102, TROUBLESHOOT.md references npm scripts "build"
and "test" that don't exist; either add those scripts to package.json or update
the doc to use the actual scripts ("start", "dev", "lint", "lint:fix"). Fixing
options: (A) add sensible scripts named "build" and "test" to package.json
(e.g., tie "build" to your project build step and "test" to your test runner) so
npm run build/test succeed, or (B) edit TROUBLESHOOT.md to replace instances of
npm run build and npm test (lines referenced) with the correct commands (npm run
dev/npm run start and your test invocation) and ensure the doc and package.json
remain consistent; update both places if you change script names.

Comment thread TROUBLESHOOT.md
Run:

```bash
npm test

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⚠️ Potential issue | 🔴 Critical | ⚡ Quick win

Critical: Non-existent npm test script referenced.

The command npm test doesn't exist in this project. The package.json defines no test script. Users following this troubleshooting guide will encounter a "missing script: test" error.

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` at line 116, The troubleshooting doc references a
non-existent npm test script; either update TROUBLESHOOT.md to use the actual
project command or add a test script to package.json. Locate the "npm test" line
in TROUBLESHOOT.md and replace it with the correct command used by this repo (or
add a "test" entry in package.json scripts that delegates to the real test/lint
command), ensuring consistency between package.json and the guide.

Comment thread TROUBLESHOOT.md
Comment on lines +145 to +150
```bash
npm run dev
npm run build
npm test
npm run lint
```

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⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Major: Debugging commands list includes non-existent scripts.

Two of the four "useful commands" listed (npm run build and npm test) don't exist in this project's package.json. Only npm run dev and npm run lint are valid.

🔧 Proposed fix
 ### Useful Commands
 
 ```bash
 npm run dev
-npm run build
-npm test
 npm run lint
+npm start
</details>

<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

```suggestion
### Useful Commands

🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@TROUBLESHOOT.md` around lines 145 - 150, Update the commands list in
TROUBLESHOOT.md so it matches package.json scripts: remove references to the
non-existent "npm run build" and "npm test" and replace them with the actual
runnable script ("npm start"), keeping "npm run dev" and "npm run lint"; ensure
the list contains "npm run dev", "npm start", and "npm run lint" and verify
these script names exactly match the keys in package.json.

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[DOCUMENTATION] Add Comprehensive Troubleshooting Guide for Common Project Issues

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