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 ('87d1b305170a1e0d10c03bca5556892a', -1, 1441205334, 1441205334, '36a7050f', -1, 0, 0)

Line : 187
File : sessions.php