Bad HTTP "Content-Type" header from the Dropbox API

Yes, for anyone reading this...

If you are calling something that takes no parameters like: https://api.dropboxapi.com/2/users/get_current_account

you need to make sure either you:

1) Explicitly send NO Content-type header with your request so it is completely absent:

or

2) If you have an underlying framework in your code making the call that puts in a default content header, you need to explicitly override it and send a blank one ala Content-type: ""