How to analyze the reason of getter haven't been called?

Firefox Developer 94.0b9

I’m trying to use angular elements for content script. The angular app compiled to two javascript file (main, polyfill). Then, it’s should do something. But the error appeared.

It’s weird. The first point (line 481) haven’t been called. So the second point (line 512) do it, the error ERROR TypeError: can't access property "events", this.ngElementStrategy is undefined.

I have no idea for how to trace this error correctly. Why the getter haven’t been called?

Repo with error: