Firebase cloud functions from JCEF

Hello, 

I am currently building a plugin to integrate a web app into the IntelliJ platform using JCEF.

My problem is that I cannot make requests to Firebase to call any of my cloud functions from javascript running in the JCEF browser. Every POST request results in an Internal Error that I can not get around.

Is there some way to configure the JCEF browser to allow these types of requests or is there another way to handle a situation like?

Additionally, I am unable to use OAuth 2 flows for my authentication service to sign in to google which is a related issue as well that I am trying to get around.

Any information would be greatly appreciated.

Thanks!