phpBB : Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 144 Table './mtfeu_m2/acz_phpbb_sessions' is marked as crashed and last (automatic?) repair failed

SELECT u.*, s.* FROM acz_phpbb_sessions s, acz_phpbb_users u WHERE s.session_id = '99926d3cbbf7d5d90fbf1b373c66b629' AND u.user_id = s.session_user_id AND session_time > 1762704473

Line : 270
File : sessions.php