phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 145 Table './DB52017/phpbb_sessions' is marked as crashed and should be repaired

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = '6d6a4a14b78a7edf593ebd2f2b976694' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php