Issue Error Saving PHP 5.5.38 Settings

[Matt_Hill]

I'm currently using PHP 5.5.38 (FPM served by Apache)

I added max_input_vars = 30000 to the additional configuration directives box, however when saving the PHP settings i get the error:

Error: phpinimng failed: Job for plesk-php55-fpm.service failed. See "systemctl status plesk-php55-fpm.service" and "journalctl -xe" for details. Failed to start plesk-php55-fpm service

PHP will then not function until the server reboots, however once the server reboots the settings have been saved and then function as intended.

OS: ‪Ubuntu 16.04.1 LTS‬
Product: Plesk Onyx 17.0.17 Update #12

 

[Bitpalast]

I think the only way to find out more about this is to run
# systemctl status plesk-php55-fpm.service
and
# journalctl -xe
and see what's in these logs on restarting PHP55 FPM.