Course deletion failed on question bank purging

Deleting a course with the question in it I get an error message:

Debug info: Unknown column 'course' in 'where clause'
SELECT 'x' FROM mdl_question_categories WHERE course IS NULL AND id = ? LIMIT 0, 1
[array (
0 => '15',
)]
Stack trace:
line 391 of \lib\dml\moodle_database.php: dml_read_exception thrown
line 691 of \lib\dml\mysqli_native_moodle_database.php: call to moodle_database->query_end()
line 1540 of \lib\dml\moodle_database.php: call to mysqli_native_moodle_database->get_recordset_sql()
line 1525 of \lib\dml\moodle_database.php: call to moodle_database->record_exists_sql()
line 1509 of \lib\dml\moodle_database.php: call to moodle_database->record_exists_select()
line 2269 of \lib\questionlib.php: call to moodle_database->record_exists()
line 654 of \lib\questionlib.php: call to sort_categories_by_tree()
line 4186 of \lib\moodlelib.php: call to question_delete_course()
line 4048 of \lib\moodlelib.php: call to remove_course_contents()
line 69 of \course\delete.php: call to delete_course()