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 ('9abb1a3968d353ec54a7227e2039965f', -1, 1386253450, 1386253450, '36ccd0cc', -1, 0)

Line : 158
File : sessions.php