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 ('039b0ee28793f609c118b99ed095c7f9', -1, 1715005100, 1715005100, '1276e345', -7, 0, 0)

Line : 189
File : sessions.php