phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 145 Table '.\submission\sub_sessions' is marked as crashed and should be repaired

SELECT u.*, s.* FROM sub_sessions s, sub_users u WHERE s.session_id = 'c3b6be02ec0a857c13b6d5e9cbe3e0b3' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php