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 ('9afc17914778e32d116417e9eb41ddf4', -1, 1438729976, 1438729976, '6b14059c', 0, 0, 0)

Line : 168
File : sessions.php