Loading a 360-degree photosphere A-frame web application in Oculus Go

Hello all, 

I've just purchased an Oculus Go headset and I'm looking forward to developing web applications with A-frame for viewing 360 photospheres. I've got an existing simple A-frame web application here that displays a photosphere and so far, I've been unable to get it to load in the Oculus Go web browser. Do I need to use a particular web browser with the headset to get the photosphere to load?

Appreciate any pointers!

Chris