phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

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

SELECT u.*, s.* FROM forum_sessions s, forum_users u WHERE s.session_id = 'bb7948d45b0eb80bb5568db385bf5be7' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php