Just moved a c5 site and all went well except for one thing...I went to clear the cache and I get this error:

Fatal error: Call to a member function submit() on a non-object in /var/www/vhosts/thevnacares.org/httpdocs/updates/concrete5.5.1/concrete/single_pages/dashboard/system/optimization/clear_cache.php on line 8

All was working fine on the old server and I didn't change any settings. I have other c5 sites running on this server without problems.

It has been a long road with this one and I am just hoping someone can steer me in the right direction.

Thanks,
John