title: Configuration.GetSection is returning null in .net core (3.1)
body: <p>I am trying to get information appSettings.json file using "Configuation.GetSection". but somehow i am not able to get this.</p>
  
  <p>here is the code </p>
  
  <p>appSettings.Development.json:</p>
  
  <pre><code>{
      "test": {
      "a": "sdfs"
  }
  </code></pre>
  
  <p>startup.cs</p>
  
  <pre><code>var test = Configuration.GetSection("test");
  </code></pre>
  
  <p>is there anything I need to run get the information from appsettings.json file.</p>
  
  <p><a href="https://i.stack.imgur.com/nRPk6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nRPk6.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/MBJ0u.png" rel="noreferrer"><img src="https://i.stack.imgur.com/MBJ0u.png" alt="enter image description here"></a></p>
  
  <p>please help. thanks in advance</p>