It may also be due to a temporary network problem. I saw another person post about a Cloudflare problem similar to the one you posted about.
If this is a standard issue, it may also be due to a technical problem. But now you can try to see if everything is working correctly.

Normally, if such a problem occurs repeatedly or many users face it, you can report it to the admin panel. Since it is a problem of 1-2 people, you can clear your data and try again, and everything will work fine.