I get this error when trying to permanently delete a folder in my trash. I checked, as suggested in the other discussion about this, and the folder is not shared (this was the problem in the other discussion). In fact, I am the only user on my account and have zero shared folders. I believe the problem is because the large amount of files within the folder, there are 37k, but I could be wrong. I have tried to delete again, as suggested by the error message, and from a different web browser (chrome, edge, and firefox), as suggested in the other discussion, all to no avail. I can not open the deleted folder to select files to manually delete, all though even if I could then it would be too tedious due to the large number of files.
In general, I would really appreciate a clear all trash button or even better, an option to completely turn trash off.