Make get request Ionic 4 with Capacitor

Hi guys,
I am trying to make a Get Request. I had a CORS issue and I’ve created proxy config and it started working for the browser but on mobile (Android), when I am using Ionic Native HTTP it 's working. But if I use Angular HttpClient I get a html response with capacitors code in it. And the error i get is that it’s trying to parse the html to json. I have no access to the backend only the front end. Can you help me ?