phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './messageboard/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 ('26af42718f0da2c317d91f68cc0b7ebe', -1, 1419076113, 1419076113, '365b19d2', 1, 0, 0)

Line : 187
File : sessions.php