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 ('ea491c8dcf92895ab83c51b5b9d3c2a3', -1, 1715340828, 1715340828, '03864dc3', 7, 0, 0)

Line : 189
File : sessions.php