phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 144 Table './zabsthebibs/phpbb_sessions' is marked as crashed and last (automatic?) repair failed

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = 'fafee01f3f1f08a9d25ab3eb9e0c49c3' AND u.user_id = s.session_user_id

Line : 315
File : sessions.php