When i try to add an activity or resource, a popup comes and keeps loading forever.
If i drag a file, it uploads.
If i try to add topics, works fine.
Duplicate stuff also works.
Where should i be looking to fix this?
In 3.9 a change to the first step in choosing a mod/activity/resource is that big box popup allowing you to choose which/what.
To change to old behavior, add the following line to your config.php file:
$CFG->modchooserdefault=0;
above the require_once line at the bottom of the config.php file.
No need to restart/reboot. Next click on anything in Moodle the setting change will be in affect.
'SoS', Ken
What version of Moodle do you have? Is it a new installation or an upgrade? If upgrade what steps were followed for this? Are there any errors in the browser's console?