I’ve copied the Photos Library to a WD MyCloud, a couple of times accidentally. When I try to drag the Photos Library from my MacBook Pro, or the MyCloud drive it initially says "Deleting ‘’ ", then I get a pop up saying, “The operation can’t be completed because the item ‘file cache’ is in use.” Other times the pop up will give a random number or letter instead of “file cache”. I’m sure it’s something simple, but I don’t know what to do. Any help would be greatly appreciated.
Try to delete from the Mobile App