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 = 'ff51702b3548cc5e4ea4e8d3747f2d4e' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php