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 ('4026abbb17d89e3313f60a59aa19d2b1', -1, 1714743766, 1714743766, '0390248d', 20, 0)

Line : 158
File : sessions.php