phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

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

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = 'd36b9bf8db4e8c01132b2d24bd20f9b8' AND u.user_id = s.session_user_id

Line : 267
File : sessions.php