phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 145 Table './macadsl_bb/sessions' is marked as crashed and should be repaired

SELECT u.*, s.* FROM sessions s, users u WHERE s.session_id = '6c4b5e275992d822e433e4fd28194055' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php