Issue ERR [util_exec] proc_close() failed ... by a Custom default pool configuration

[Jormodn]

Hello Everyone,

I've created a custom configuration for my PHP-FPM Pool by adding the File php.ini in the Folder /var/www/vhosts/system/domain.com/conf/

It runs perfectly till today. I have Increase the Limits and rebuild the Configuration Files with
plesk bin php_settings -u
after this this error was displayed

root@server:/var/www/vhosts/system/domain.com/conf#

plesk bin php_settings -u
[2017-05-03 11:35:48] ERR [util_exec] proc_close() failed ['/opt/psa/admin/bin/phpinimng' '--type' 'fpm' '--service' 'plesk-php56-fpm' '--poold' '/opt/plesk/php/5.6/etc/php-fpm.d' '--restart'] with exit code [1]

[2017-05-03 11:35:49] ERR [panel] Remove PHP-FPM config for domain.com due to service failure.
phpinimng failed: invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.

invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.
invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.
invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.
invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.
invoke-rc.d: initscript plesk-php56-fpm, action "status" failed.
Failed to restart plesk-php56-fpm service

exit status 1

The Configuration:

Expand/Collapse Block: php.ini File

[php-fpm-pool-settings]
pm = dynamic
pm.max_children = 265
pm.start_servers = 128
pm.min_spare_servers = 82
pm.max_spare_servers = 128
pm.max_requests = 500

I delete the old configs from /opt/plesk/php/5.6/etc/php-fpm.d already but nothing happend

Greetings from Germany