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 ('a429b2eed34d6a43ae5c2fb5b4162999', -1, 1714007919, 1714007919, '12db569b', -2, 0, 0)

Line : 187
File : sessions.php