Error: Failed opening required '/home/xbcriaga/gregloucks/modules/mod_custom/mod_custom.php' (include_path='.:/opt/cpanel/ea-php81/root/usr/share/pear')

Hi Greg,

As you know Module Custom is Joomla core one.

Check 3 things:

1. If you have that folder: modules\mod_custom - with all files inside, compare with Joomla_4.4.0-Stable-Full_Package.zip. In case of just override all files from that zip to be sure it's current.
2. Is your template et_photography override that custom module, if yes - delete that override:
   templates/et_photography/html/mod_custom

It's possible that used by you template was designed for J3, becuase was created 2 years ago. And mod_custom has a new Joomla 4 structure.

3. Make template "Cassiopeia" default for 90sec and check if you still have that same error message.