Hi anonymous user ,
please take a look here: https://github.com/MicrosoftDocs/azure-docs/issues/68964
It sounds like changing the system local doesn't work properly for running the setup.
Please try to install a computer using the system-local en-us
from the beginning. I hope that the Microsoft Azure Site Recovery Unified Setup will then run on this machine.
----------
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten