Retry was fine.
I am just providing this process in case it is of some use. I doubt it is a bug more than Unity just refactoring during the beta.
I redacted project title (white blobs).
Retry was fine.
Had the similar problem with another package and retry didn’t work. A lot of classes and references were missing. Safe-mode didn’t help.
Workaround: Deleted library folder (with the package cache) before upgrading project to fix.
I simply remove URP from package manager and then it start working