phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('a3db85bd217803bd3c9a6f9fdafa2905', -1, 1386551416, 1386551416, '4b65c1fa', -1, 0)

Line : 158
File : sessions.php