Flutter http request works on Android but not Chrome or MacOS

Question

This is the code that I am running:

var response = await http.get(
      Uri.parse(
        'https://arkiteki.co/api/v1/questions',
      ),
    );

Results:

Android: Works

Chrome: Error: XMLHttpRequest error.

MacOS: connection failed

Same code, different results. I need to get it working on Chrome. What could be happening?