Welcome to the forum, and Qubes!
I don’t have an answer for you, but I’m sure someone in here will help you get your Qubes installation on track (stick with it, it’s worth it).
In the mean time try search around with your errors in the forum, there are lots of good posts in here.
Immediately I found these two which seem to be a similar issue, read through them and see if you can find a solution there:
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