After upgrading from 2.9.2 to 2.9.3 we stuck at this error. when we edit grade for assignment in the Grading page we get this traceback below. Maybe someone know where I can start investigation?
and I can't reproduce this on the clean installation of 2.9.3 even when all plugins/themes/question types etc is also installed from main site to the clean site.
Default exception handler: Aborting save. Moodle could not determine which user to save the grade against. Debug:
Error code: useridlistnotcached
line 6934 of /mod/assign/locallib.php: moodle_exception thrown
line 491 of /mod/assign/locallib.php: call to assign->process_save_grade()
line 52 of /mod/assign/view.php: call to assign->view()