Can't find data record in database.

More information about this error

Debug info:
SELECT c.*
FROM {course_modules} cm
JOIN {course} c ON c.id = cm.course
WHERE cm.id = ?
[array (
0 => 9390,
)]
Error code: invalidrecordunknown
Stack trace:
  • line 1590 of /lib/dml/moodle_database.php: dml_missing_record_exception thrown
  • line 2237 of /lib/modinfolib.php: call to moodle_database->get_record_sql()
  • line 30 of /mod/assign/view.php: call to get_course_and_cm_from_cmid()