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
taglocklar
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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">