phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './illustra_phpbb1/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 ('715a526c1bfad4bc7b8ff3031f708f30', -1, 1413921262, 1413921262, '36a74b9b', -1, 0, 0)

Line : 187
File : sessions.php