Not sending email due to $CFG->noemailever config setting

line 5723 of /lib/moodlelib.php: call to debugging()

line 88 of /message/output/email/message_output_email.php: call to email_to_user()

line 230 of /lib/messagelib.php: call to message_output_email->send_message()

line 4567 of /mod/assign/locallib.php: call to message_send()

line 4596 of /mod/assign/locallib.php: call to assign::send_assignment_notification()

line 4649 of /mod/assign/locallib.php: call to assign->send_notification()

line 5585 of /mod/assign/locallib.php: call to assign->notify_student_submission_receipt()

line 5631 of /mod/assign/locallib.php: call to assign->save_submission()

line 391 of /mod/assign/locallib.php: call to assign->process_save_submission()

line 53 of /mod/assign/view.php: call to assign->view()