title: HttpClient giving 404 request on create-react-app
body: <p>I'm working with some code in asp.net core and part of it gets the url, and using HttpClient, using GetAsync method to do a get request. In the constructor, I have<br>
   <code>private readonly HttpClient _client = new HttpClient();</code><br>
  and in another method, the <code>_client</code> gets used to do the get request, for example,  </p>
  
  <pre><code>private async Task&lt;string&gt; GetContent(string url){
   var response = await _client.GetAsync(url);
  }
  </code></pre>
  
  <p>I always get a 404 not found error when I use localhost:3000 or <a href="http://localhost:3000" rel="nofollow noreferrer">http://localhost:3000</a> from my create-react-app project. How can I get it to work? It works for other sites like google. It even works for the localhost url that swagger is using.</p>