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I think there’s an answer to your question:
Components built via the Vue 3 vue-cli rely on Vue being available in
the global scope. So in order to render components loaded via the
technique described in my article, you need to set window.Vue to a
reference to Vue itself. Then everything works as expected.
Markus Oberlehner
@moriartie (Markus Oberlehner) has already worked that out with @markoffden: Vue 3 external component/plugin loading in runtime
Source:stackexchange.com