I moved my Cockpit installation from a apache to a nginx with PHP 7.3.
After moving the data I can see all my collections, … and assets. The problem is, that I cannot see the preview for png and jpg in the asset section. I can only see the preview for svg.
Once I click on the image, I can see it in the pop up. This indicates that the image is indeed there and the migration was succesfull.
Do you know why the preview is not working? Could this be a PHP GD issue? Or do I need a special PHP extension enabled for this?