title: error MSB4062: The "Xamarin.Forms.Build.Tasks.GetTasksAbi" task could not be loaded from the assembly
body: <p>After updating the packages "Xamarin.Forms" and "Xamarin.Forms.Maps" to latest version i.e "3.0.0.446417", the project will no longer build and I get this error:</p>
  
  <pre><code>    C:\Users\[MyUser]\.nuget\packages\xamarin.forms\3.0.0.446417\build\netstandard2.0\Xamarin.Forms.targets(35,3):
  error MSB4062: The "Xamarin.Forms.Build.Tasks.GetTasksAbi" task could not be loaded from the assembly
  C:\Users\[MyUser]\.nuget\packages\xamarin.forms\3.0.0.446417\build\netstandard2.0\Xamarin.Forms.Build.Tasks.dll.
  Could not load file or assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies.
  The system cannot find the file specified. Confirm that the &lt;UsingTask&gt; declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.
  </code></pre>
  
  <p>The error refers to this place of the file <em>Xamarin.Forms.Targets</em>:</p>
  
  <pre><code>&lt;XamlGTask
      XamlFiles="@(EmbeddedResource)" Condition="'%(Extension)' == '.xaml' AND '$(DefaultLanguageSourceExtension)' == '.cs'"
      Language = "$(Language)"
      AssemblyName = "$(AssemblyName)"
      OutputPath = "$(IntermediateOutputPath)"&gt;
      &lt;Output ItemName="FilesWrite" TaskParameter="GeneratedCodeFiles" /&gt;
      &lt;Output ItemName="Compile" TaskParameter="GeneratedCodeFiles" /&gt;
  &lt;/XamlGTask&gt;
  </code></pre>
  
  <p></p>
  
  <p>And the XamlGTask is underlined with a warning which says:</p>
  
  <pre><code>Task 'XamlGTask' is not defined
  </code></pre>
  
  <p>What I've done so far is cleaning the whole solution, deleting the obj/bin folders and also clearing All Nuget Caches from Package Manager Settings but none of them helped.</p>