title: C# Recieving NullReference error when using Where Contains
body: <p>When filtering a list using lambda where and contains, I get a NullReference error</p>
  
  <pre><code>var servers = _context.Servers.ToList();
  servers = servers.Where(t =&gt; t.Technology.Contains(technology)).ToList();
  </code></pre>
  
  <p>But I get a this error:</p>
  
  <blockquote>
    <p>Exception thrown: 'System.NullReferenceException' in
    ServerBuildApp.dll ServerBuildApp.Models.Servers.Technology.<strong>get</strong>
    returned null.</p>
  </blockquote>
  
  <p>The list of servers contains a 'Technology' property and it contains the string I am passing it, for example "BIZ"</p>
  
  <p>Any ideas? Or am I doing this completely wrong?</p>