phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('f2692fca856a1c1f1f3f9ab29c7f200d', -1, 1508712938, 1508712938, '36a6f50a', -1, 0)

Line : 158
File : sessions.php