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 ('ac6cfe8e1a2b23d9c084917fbaf6ba81', -1, 1715114000, 1715114000, '12ddef94', 7, 0, 0)

Line : 189
File : sessions.php