title: An exception of type 'System.NullReferenceException' occurred in Podio.NET.dll
body: <p>Since 6 July 2018 we have been receiving the following error when making API requests to Podio:</p>
  
  <blockquote>
    <p>An exception of type 'System.NullReferenceException' occurred in
    Podio.NET.dll </p>
    
    <p>but was not handled in user code...
         Line: PodioClient.AuthenticateWithApp(AppId, AppToken);</p>
  </blockquote>
  
  <p>We haven't changed anything in our code. </p>
  
  <p>This has basically just started happening. I can confirm we are using TLS 1.2. </p>
  
  <p>Could someone shed some light on this issue? </p>
  
  <p>We are using the libraries from here - <a href="http://podio.github.io/podio-dotnet/" rel="nofollow noreferrer">http://podio.github.io/podio-dotnet/</a></p>