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 ('1fff86ba0a85579bbcd22b9d0ea664c2', -1, 1469687810, 1469687810, '369007ef', -1, 0)

Line : 158
File : sessions.php