It's a web page link. You have updated your Safari to 14.0.1 and there is a bug that displays Safari .webloc files as blank.
If you updated Safari to 14.0.1 it causes ALL web browsers .webloc icons (at least all of the browsers I have on my Mac) to be blank. That includes Firefox, Chrome, Edge, ect...I don't use Safari. I've used Firefox since this MacBook was new in mid 2012.
Thank you ?If you updated Safari to 14.0.1 it causes ALL web browsers .webloc icons (at least all of the browsers I have on my Mac) to be blank. That includes Firefox, Chrome, Edge, ect...