phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('3e84b88953c2d8a793311e57e3af9ae6', -1, 1411293940, 1411293940, '36a6ad93', 7, 0, 0)

Line : 187
File : sessions.php