Getting a '{'code':'ERROR_CODE_NOT_FOUND','message':'Unable to locate request.'}' with Apple Sign In

Hi

I'm getting an error below after I click on Continue on the Apple page and instead of getting the Xano token as is shown in the tutorial, the error pops up.
{'code':'ERROR_CODE_NOT_FOUND','message':'Unable to locate request.'}I've been following the tutorial in a slow and thorough fashion so not sure where this might be coming from.

Can anyone point me in the right direction of where to look here? I've configured the snippet with all of my credentials from the Apple account and otherwise set everything up on the Apple side exactly how Chris shows it in the tutorial. I also have the $99/year Developer account and everything seems to be setup correctly with Apple.