I have isolated the module causing the error... Data mining for statistics seems to be throwing the aforementioned error. When disabled it stops throwing the Apache Error with regards to "Missing $Template Parameter.
However now it has started throwing the following error when navigating the "Dashboard" section of the BO.
Quote[Fri Sep 23 16:02:25.739578 2022] [php7:warn] [pid 238646] [client xxx.xxx.xxx.xxx:57574] PHP Warning: Invalid argument supplied for foreach() in /var/www/domain.co.za/html/modules/dashproducts/dashproducts.php on line 219, referer: https://domain.co.za/adminxxxxxxxxx/index.php?controller=AdminDashboard&token=xxxxxxxxxxxxxxxxxxxxx
I have attempted to reset the module and it has done nothing favourable either. Perhaps a total removal of this module would be more ideal.