phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('075af11d627b7d3c2c5901c4b6265899', -1, 1714010503, 1714010503, '2cc961e0', -10, 0, 0)

Line : 187
File : sessions.php