phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 145 Table './db_mtss3/phpbb_sessions' is marked as crashed and should be repaired

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = 'd709b60fa9c2f7ecaedc8ae62a542c40' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php