phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('1c55f9409d589a98c58f9e4a64e16cdc', -1, 1406041290, 1406041290, '36d3c941', 10003, 0, 0)

Line : 189
File : sessions.php