Hi,
After updating our Bitbucket Server from:
Old: 7.16.1
New: 7.21.5
We cannot push code and we see this message:

I've double-checked our license, and it is valid until next year.
As we updated the server due to reports that there was a security warning that had to be addressed, I would be thankful for any advice that is different to reversing to the previous version.
Thank you in advance.
Best,
Edmundo R. Sánchez Guajardo