I did a clean install of Mojave about a week ago, then a few days later I had a strange experience where the preferences in Mail were blank. I found an explanation to fix this online that involved renaming the container file for Mail inside the user library and restarted the Mac computer, which duly fixed the issue by generating a new one. I moved the old folder and contents to the trash, but following various restarts, terminal scripts and using Tashit that folder containing Data > DataVaults will not empty from the trash, because it is apparently in use. This means I have to deal with the message explaining why it cannot be deleted every time I empty the trash of other items. The items are not locked and I am struggling to understand what is happening here. Any ideas?