chaj17

in a multisite wordpress deployment, The network administration pages are all located within the wp-admin/network area. So for example https://mysite.com/wp-admin/network is main dashboard where you can upgrade plugins, upgrade wordpress, change plugin settings etc. When cerber is activated any wp-admin/network url returns an http 500 response. When I disable cerber, I can get to these pages just fine.

https://mysite.sample.com/wp-admin/network/plugins.php is an example.

I finally figured out what was wrong. the php-xml package was not installed on the server. I finally found an error in one of the log files that pointed me in the right direction:

2017/10/16 22:14:07 [error] 14850#14850: *1090 FastCGI sent in stderr: “PHP message: PHP Fatal error: Uncaught Error: Call to undefined function simplexml_load_string() in …

Some plugins check for all required dependencies and have strong error reporting if something is missing. This plugin does not do that ??