Nope. Ignorance. Again, the document was not made by anyone in the papal court. Therefore, it was something found, something given to them years after the forgery was made. Citing a popular historian like Wilson - who can only rely on those who know better or ignore their research - isn’t going to help your case.
Imagine that! The magesterium of the Roman Catholic Church proceeding to follow a decree out of pure ignorance, never bothering to determine its authenticity, simply because it served the goals of universal temporal supremacy. Glad you can admit it.