Moodle version: 3.9.1 (yes the update to 3.9.2 has been scheduled we just haven't gotten to it yet)
I have also performed a search of all the existing forums. The solution may be in there somewhere but I did not find it.
I am very new to Moodle. The guy who managed Moodle since its introduction to our system left abruptly a few weeks ago.
Issue: I have an instructor with two classes that are the except for the students enrolled and the time of day the class is scheduled. The issue is that a "Grade" button for one of the classes in one of the weeks produces an error:
"generalexceptionmessage
Exception-Call to a member function get_controller() on null"
No other "Grade" button in that class or the other identical class produces this error.
Is there a solution or a fix for this?
I appreciate any help provided.