misunderstanding: an occasion when someone does not understand something correctly
I am aware of the meaning of it but am not sure the usage of it. Ngram Viewer shows that both are common.
There has to be a misunderstanding between us.
There has to be some misunderstanding between us.
Do they mean the same thing? Are they interchangeable for any cases?
The post That's a misunderstanding is related but there is no further explanation why there has to be an article there.
For example, which rule in English Grammar Today on Cambridge Dictionary applies here?