phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './cm_forum/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b2586a8797a1526a540f02aa1a21543e', -1, 1455061859, 1455061859, '369386da', 0, 0, 0)

Line : 168
File : sessions.php