phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

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

SELECT u.*, s.* FROM phpbb_mw_sessions s, phpbb_mw_users u WHERE s.session_id = 'b175eb45c9f1152d8696fa8918fb2fda' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php