Getting an "unexpected error" each time I try to deploy an app

For some reason I get an “unexpected error” each time I try to deploy an app. It happens with both my custom-built files and even templates.

I had a working project in August, but at some point I logged into my Streamlit account and couldn’t see the app. After that I also couldn’t deploy anything.

Tried a lot of things such as relogging, deleting and creating a new reposiotry at GitHub. Nothing seems to work.

Do you know what might be the reason?

To me appears the code 403, is really bothering!

I am in a very similar situation.
In my case, I had recently deployed a clone of the same app because I turned it into a multipage app and wanted to change the name of the main file. Then, I deleted the older version and at first everything was working smoothly. However, after some minutes the app stopped working and disappeared from my app list. Now, whenever I try to deploy it again I get a “Unexpected problem” error (or 403) and cannot proceed. Please help!

P.s. I have noticed in other posts that a potential cause for this problem is trying to deploy more than one private app. However, my GitHub repo is Public and I in any case I have no other apps at the moment.