Execute the following SQL, to create a send_notification event log into the mdl_task_log table: INSERT INTO mdl_task_log (type, component, classname, userid, timestart, timeend, dbreads, dbwrites, result, output) VALUES ( 1 , 'mod_bigbluebuttonbn' , 'mod_bigbluebuttonbn\task\send_notification' , 2 , 1692986061.1220000000 , 1692986071.5915000000 , 16 , 5 , 0 , 'Execute adhoc task: mod_bigbluebuttonbn\task\send_notification\n... started 11:54:21. Current memory …' ); Logged in as admin, go to Site administration > Server > Tasks > Task logs . Ensure that the logs can be viewed and no error is displayed.