Blank Results: gradio\processing_utils.py:744: RuntimeWarning: invalid value encountered

[apappas1129]

I'm getting the following runtime warnings:

C:\Users\Floki\Miniconda3\envs\f5\lib\site-packages\gradio\processing_utils.py:741: UserWarning: Trying to convert audio automatically from float32 to 16-bit int format.
  warnings.warn(warning.format(data.dtype))
C:\Users\Floki\Miniconda3\envs\f5\lib\site-packages\gradio\processing_utils.py:744: RuntimeWarning: invalid value encountered in cast
  data = data.astype(np.int16)

Environment:

wmic path win32_VideoController get name
Name
NVIDIA GeForce GTX 1660 SUPER

nvcc --version
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2025 NVIDIA Corporation
Built on Fri_Feb_21_20:42:46_Pacific_Standard_Time_2025
Cuda compilation tools, release 12.8, V12.8.93
Build cuda_12.8.r12.8/compiler.35583870_0

conda info
     active environment : f5
    active env location : C:\Users\Floki\Miniconda3\envs\f5
            shell level : 1
       user config file : C:\Users\Floki\.condarc
 populated config files : C:\Users\Floki\Miniconda3\.condarc
          conda version : 25.1.1
    conda-build version : not installed
         python version : 3.12.9.final.0
                 solver : libmamba (default)
       virtual packages : __archspec=1=x86_64_v3
                          __conda=25.1.1=0
                          __cuda=12.8=0
                          __win=10.0.22631=0
       base environment : C:\Users\Floki\Miniconda3  (writable)
      conda av data dir : C:\Users\Floki\Miniconda3\etc\conda
  conda av metadata url : None
           channel URLs : https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
          package cache : C:\Users\Floki\Miniconda3\pkgs
                          C:\Users\Floki\.conda\pkgs
                          C:\Users\Floki\AppData\Local\conda\conda\pkgs
       envs directories : C:\Users\Floki\Miniconda3\envs
                          C:\Users\Floki\.conda\envs
                          C:\Users\Floki\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/25.1.1 requests/2.32.3 CPython/3.12.9 Windows/11 Windows/10.0.22631 solver/libmamba conda-libmamba-solver/25.1.1 libmambapy/2.0.5 aau/0.5.0 c/. s/. e/.
          administrator : False
             netrc file : None
           offline mode : False

Gradio does still run successfully and I tried to synthesize with a sample audio but I'm getting blank results. The error above could be the issue.

Apologies in advance if I'm overlooking something basic — I'm not a Python developer, and this is my first time attempting to self-host an AI project. I'm happy to provide any additional details needed to help troubleshoot this issue — please let me know what would be most helpful.

[SWivid]

https://github.com/search?q=repo%3ASWivid%2FF5-TTS+1660&type=issues