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 ('ad6d08a4919634c625b0e4bf8d36f8d8', -1, 1715340850, 1715340850, '0387b759', 3, 0, 0)

Line : 189
File : sessions.php