I recently updated Joomla to 3.9.15 stable - while updating I noticed there was an updated to T4 including a few other extensions like JCE, Akeeba, etc. I updated all without issue.
Just popped into work on the site and I've noticed any areas that use JoomlaArt ACM (Advanced Custom Module) are not working like Slideshow, Testimonials, more.
JoomlaArt ACM is 2.1.6 is published. All AMC modules/content areas are published and correct pages enabled.
I used Akeeba Backup to restore the site to 3.9.14 but still no joy :/
What is the best way to rectify this? Stuck. Was hoping to go live with the site this week.
Thank you