phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

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

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = 'f50991d13f3bbe8d1b56bc8e5681e93e' AND u.user_id = s.session_user_id

Line : 267
File : sessions.php