Appflow in Android Studio/Simulator

I’m looking to validate that AppFlow Live Updating is working correctly via Android Studio. However I’m running in a CORS issue when hitting the LiveUpdate API:

Msg: Access to fetch at ‘’ from origin ‘http://localhost’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: It does not have HTTP ok status.

Any suggestions on how to get around this?

Do you have anymore information here? Is this in release builds or dev builds?