Error: mdb->get_record() found more than one record!

line 1690 of /lib/dml/moodle_database.php: call to debugging()
line 1650 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql()
line 1629 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()
line 77 of /courses/index.php: call to moodle_database->get_record()
line 176 of /courses/index.php: call to weduko_get_course_ownerid()
line 368 of /courses/index.php: call to weduko_count_visible_courses_for_category()

Error: mdb->get_record() found more than one record!

line 1690 of /lib/dml/moodle_database.php: call to debugging()
line 1650 of /lib/dml/moodle_database.php: call to moodle_database->get_record_sql()
line 1629 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()
line 77 of /courses/index.php: call to moodle_database->get_record()
line 176 of /courses/index.php: call to weduko_get_course_ownerid()
line 368 of /courses/index.php: call to weduko_count_visible_courses_for_category()