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) VALUES ('4c4709e769b92f75cf11b294ae3f9383', -1, 1714408989, 1714408989, '12bfca2d', 9, 0)

Line : 158
File : sessions.php