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 ('8db929ea427c73e2d05857ded2a27d9e', -1, 1469625907, 1469625907, '36920a01', -1, 0)

Line : 158
File : sessions.php