Changing PHP version for FPM no longer working

[calport]

This is a duplicate of a message from earlier today:

Changing from Fcgi to FPM: Apache virtual host was not found

**Operating system: Debian **OS version: 10 (Buster) Hi there, I was trying to change one of my websites to PHP-FPM. I could change it in Virtualmin, but when I want to change after it the Php-Version again to 7.4, I’ll get an error from the system: Failed to save PHP versions : Apache virtual host was not found I don’t know if I did something wrong, the 7.4-FPM package is actually installed on the system. Maybe someone knows more about this error? Thanks a lot