What license type were you using before changing it to Attended?
Also, this error looks somewhat similar to what we face sometime when bot tries to install packages during process execution.
Have you tried to manually copy nuget package for your apps in location mentioned and then see if it works?
Also might be worthwhile to check the username you are trying to do this has permissions to install packages on your local.
Additionally, I would also suggest to do a quick check on below:
Go to your command prompt on the machine you are trying to run the attended process on, type “whoami”, and cross verify that domain\username for the attended bot in the user settings as seen below: