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 ('9db0bce9f1b12a7f861c7b4bc93600b3', -1, 1714415382, 1714415382, '12dec1cf', 6, 0)

Line : 158
File : sessions.php