error 504 on Vercel after sometimes from the deployment

[Filpin011]

Environment

System: OS: macOS 12.6 CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz Memory: 84.76 MB / 16.00 GB Shell: 5.8.1 - /bin/zsh Binaries: Node: 16.16.0 - /usr/local/bin/node npm: 8.11.0 - /usr/local/bin/npm Browsers: Safari: 16.5

Reproduction URL

i don't have a public repository of the project :(

Describe the issue

After sometimes I deploy in production my next's project the login form start to bug and don't send the post request to my FastAPI backend deployed on fly.io, I enable the cors on FastAPI, for some hours after the deploy of my nextjs project the login works very well but after sometime it stop to give me an error and don't make the request. Vercel give me error 504 from the url: /api/auth/callback/credentials I use it as PWA in an iPhone and the UA is: Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.1

How to reproduce

My authoptions.ts

my authmodal.ts where I handle the login

Expected behavior

Should login as normal after the axios request, but its slow and continue to loading...

[stechx1]

Was it solved?

[Filpin011]

i changed server for the backend, and now is deployed on heroku, before on fly, this fixed the problem.