why api '/app/api/wheel/{wheel_id}/participant' returns 400 and says 'Authorization header is invalid -- one and only one ' ' (space) required'

[BryanSJZ]

after I config everything else, opened page And login, created a new wheel. It appears thee 400 ERROR. I didn't change anything from github about *.py and *.jsx
PLEASE HELP
THX AAAAAAA LOT

[BryanSJZ]

Like this

I have tried everything I can to skip this step but I failed. It looks like something wrong happend to Cognito Authorization.
I tried to change my AWS-CLI access key and secret key(although I dont think they're connected)
Please reply my soon, appreciate it soooo much

[BryanSJZ]