I was dealing with this error for two days:
No such bucket named ‘Test’
Which was misleading. The reason was not that there was no such bucket. It was because the user who ran the process from the given folder did not have the specified role to access it. I suggest the error message be changed to “unauthorized” or “no permissions for user x to access bucket” if you don’t have access to it. “No such bucket” is very misleading and wrong