phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

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

SELECT u.*, s.* FROM phpbb_sessions s, phpbb_users u WHERE s.session_id = 'edb632a7ac1973acb239d346d83d4b1a' AND u.user_id = s.session_user_id

Line : 319
File : sessions.php