All of Google’s fonts are manufacturing consent.

F12 should open the browser developer tools, one panel will be the network requests.

It could be the accepts header then… check if the request includes accetps: application/json

In my experience that is almost always the server returning an html error page.

Start with inspecting that actual response the first character is probably <. The rest of it is likely to be a “not found” or “internal server error” (being the most common) page.

Then look at logs…

I voted for Kang!