phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './kidnem998/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 ('3ec5f389a85bb5896f48808ac59b90e8', -1, 1487858190, 1487858190, '36a1b234', -1, 0, 0)

Line : 187
File : sessions.php