A "Unable to delete" error, in the Files app sidebar.

I added a folder from onedrive to my Favorites in the Files app, and then deleted the folder from onedrive. However, the folders in "my favorites" do not disappear and cannot be deleted. When I delete a folder that was actually deleted from my favorites, I immediately see that the sidebar folder is deleted, but as soon as I re-enter the app, it will appear again in the sidebar.