Error deleting file

I created a connection to an entire hard drive, and while it was syncing, I realized that was way more data than I needed, so I deleted the files. All but one folder successfully deleted. Now I am getting Error deleting file when I attempt to delete it via the web interface. I rebooted the Nextcloud Box and I still cannot delete the file. I have a keyboard and monitor connected, and I would be able to sudo in and delete the folder if I knew where it was. Or is there another trick to doing this? Does deleting an account also delete all the files associated with it? If so, maybe I can create a second account, move the new files I want to keep, then delete the old account, thereby deleting the bad files. Ideas?