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 ('6a58ddfece1f1a1819a0d1e1db5a2924', -1, 1467437708, 1467437708, '36a13687', -1, 0)

Line : 158
File : sessions.php