phpMyAdmin and wordpress admin Error 500 Internal Server Error

Hello,
My server configs is:
CentOS 7.4
DirectAdmin 1.52.1
nginx_apache
php1 5.6 suphp
php2 7.1 fastcgi
modsecurity with cwaf rule

I get 500 error After login to phpmyadmin or wordpress admin area
When I set off "Request Body Access" in Comodo WAF 2.21 plugin my problem is solved but when cronjob for server update run, again "Request Body Access" sets on "on" again.
What to do?
Thank you