fastcgi.logging=0 at Domains > example.com > PHP Settings > Additional directives has no effect. The setting is not applied.
According to PHP documentation, the
fastcgi.logging directive cannot be changed on a domain level, only globally.
- Log in to Plesk.
Go to Tools & Settings > PHP Settings > click on a PHP version > switch to the php.ini tab.
Remove a semicolon at the beginning of this directive and change its value.
Apply the changes.