Among other places on the site, when I attempt to assign roles (whether within a course or from the Admin side), the assignment is made, but the next page is blank. If I go back one step and refresh that page, I can see that the assignment is completed.
When I turn on Debugging->ALL, I get the following error on the result page:
Fatal error: Cannot redeclare assignment_delete_instance() (previously declared in /Library/WebServer/Documents/moodle/mod/assignment/lib.php:2008) in /Library/WebServer/Documents/moodle/mod/assignment.bck/lib.php on line 2026
Which I cannot interpret, unfortunately. Is there anything I can do to fix this?
Thank you in advance!