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 ('444f0057729cbb32f64d8add6e4ad7fd', -1, 1713587310, 1713587310, '038bee4c', 6, 0, 0)

Line : 187
File : sessions.php