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 ('29947b1722ec9b082ce18f9cb51a2c49', -1, 1464206589, 1464206589, '3651d7ae', 0, 0, 0)

Line : 168
File : sessions.php