I cannot deploy the app with flask with 404 error code

[pawlean (Pauline P. Narvas)]

Hi, @rako! Welcome to the Vercel Community

We wrote this this debugging 404 errors post, could you go through this and let us know how you get on?

Debugging 404 Errors

Sometimes things don’t go as expected when deploying a website. If you see a 404 on your site, that means the page or resource couldn’t be found. There are many possible causes, and the absence of something can be tricky debug if you don’t know where to look. Here are some things you can do to find the cause and fix it. Debugging Tips Check the error code If you see a mostly white screen with 404: NOT_FOUND along with a Code and and ID then you can click the blue info box below the error deta…