Error: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays.

You are trying to iterate through a collection of things that isn't a collection at all. That is what this error means. Instead of a dentist looking at all the teeth in someone's mouth, it's like a dentist looking at all of the teeth in someone's tooth. It doesn't make sense. Get it?