Hi @kariez
Welcome to the community 
Sure, since you have setup your page locally - you’ll need to provide the proxy details in the application to access the same. This can be done by clicking on the wrench icon in the upper-right corner of the app > Settings > Proxy. Hope this helps!
You can learn more about configuring proxies on Postman from this resource here:
https://learning.getpostman.com/docs/postman/sending_api_requests/proxy/