phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO pinball_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, is_robot) VALUES ('bdd2f87d83b36e0134259f141b3cc7f0', -1, 1669743666, 1669743666, '12e83809', 40, 0, '0', '0')

Line : 175
File : sessions.php