After you update joomla from 3.9.19 to 3.9.20 you get a white screen if you open your themler template. I tried the solution on this page already:...

Hi I get an empty page when going to edit theme. Even with a clean Drupal 8 on server and bitnami.

i just purchased themler today and i cannot run it. When I start it, I get a blank screen. It happens in desktop mode and in wordpress template mode. It doesn't run. What can I do? I'm...

I got this message. And it said to contact customer support.