pm_exception error

[wpmasterdesign]

I am trying to access my domains/webspaces in Plesk, but I am getting the following message:

Internal error:
Message
File Agent.php
Line 9
Type pm_Exception

I tred to run the repair installation command.. but this did not fix the error. Also, 2 of my sites are down. Can anyone help me resolve this?

I am running plesk an a server with Centos 6.

 

[Alvin_Allen]

This KB article may help you: https://kb.plesk.com/en/128959