Twig template not defined, LoaderError

The backtrace is so useful to investigate...
It seems to be linked to Permissions by Term module (recent update).
A patch is on its way.
I have attached issues to that one, if it can help someone else.

So, this core issue is a duplicate? There is a bug in a contrib module?

Yes it seems this is an error related to Permissions by Term module and it should be fixed soon.
In my case, a downgrade from 3.1.22 to 3.1.21 was enough to fix this issue (still got some errors but it is my fault, I have modified so many things on my dev website during my investigation!)
Thank you for pointing me to the backtrace information.

cheers all, this patch https://www.drupal.org/comment/15025671#comment-15025671 → works indeed!