phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6877f64d2734b5c8b1773277c394e314', -1, 1715150226, 1715150226, '12d8e66b', 4, 0, 0)

Line : 189
File : sessions.php