phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 1194 Table 's' is marked as crashed and should be repaired

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = '1adf148d10bc9c28ba3b0fa9a2a6302e' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php