title: 'Logging' does not exist in the namespace Microsoft.Extensions
body: <p>So I have the following line at line 1 of the file.</p>
  <pre><code>using Microsoft.Extensions.Logging;
  </code></pre>
  <p>On building it throws</p>
  <pre><code>CS0234 C# The type or namespace name 'Logging' does not exist in the namespace (are you missing an assembly reference?)
  </code></pre>
  <p>Have tried searching around but was unable to find any solution or reason. The project is set to build in  <code>.net core 2.0</code>, have downloaded and installed <code>.NET Core 2.0 SDK (v2.1.202)</code>, but the error remains.</p>
  <p>Have tried changing the build version to <code>2.1</code>, <code>3.0</code> didn't help either.</p>