title: Azure DevOps project build returning with log4net error
body: <p>I'm trying to build a visual studio 2015 dot-net application which has <code>log4net</code> reference in the code. </p>
  
  <p>When I build in Azure DevOps using Nuget restore, Nuget Tool installer, Visual studio build, Publish Build artifacts I am getting an error:</p>
  
  <blockquote>
    <p>Error CS0246: The type or namespace name 'log4net' could not be found (are you missing a using directive or an assembly reference?) Process 'msbuild.exe' exited with code '1'.</p>
  </blockquote>
  
  <p>Please someone suggest whether I have to add another agent or make some reference to the package/nuget in Azure DevOps. need details since I'm new to Azure DevOps.</p>