I am having the same issue, wont load on physical or simulator. It successfully builds but no sticker pack is shown. I can reproduce it with fresh a project as well

I figured out why I couldn't test this locally, I was missing this tag on my index.html file... <meta name="apple-itunes-app" content="app-id=123456, app-clip-bundle-id=bundle.identifier.Clip, app-clip-display=card">