It seems that after installing the third party block for messaging control my chat module was messed up. I deleted the messaging control block because I wasn't happy with the way it worked. Subsequently my chat feature has debunked. I can begin to create the activity but when I click create i recive the following message:
Fatal error: Cannot instantiate non-existent class: in /homepages/19/d193738860/htdocs/testmoodle/lib/pagelib.php on line 67
I am wondering if there is a fix or should I unistall chat and reinstall it? What would be the process for a reinstall?