Hi,
tested it on Win10 CU 4170 and no issues with it.
Then I saw "WindowsPE 20H1" in your error title.
There is no need, and as the error message it's not supported by Windows, to install MSIX/APPX components in the boot.wim and winpe.wim images.
I'm listening if anyone knows which would be recommended anyway, to polish the filtering.
If that error message misled me, and you just loaded Windows Core/Pro or normal install.wim edition, then DM me your preset for testing.
Thanks.