fastcgi.logging=0in Domains > example.com > PHP Settings > Additional directives has no effect. The setting is not applied.
PHP version is higher than 5.2.1 is used
According to the PHP documentation
fastcgi.logging could be changed in php.ini or httpd.conf files since PHP 5.2.1. It could not be changed per domain level.
Modify the corresponding
httpd.conf file. For example, uncomment the following string:
;fastcgi.logging = 0
php.ini file for Plesk PHP handlers location:
Additionally: please refer to the documentation for more datails regarding PHP directives: Description of core php.ini directives