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 = '583af8a6c95214d6ae036a215b5c1475' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php