title: How to eliminate the error "XamlParseException: Set connectionId threw an exception"?
body: <p>I develop WPF Prism 6 MVVM multimodule application. Until today everything was OK. But this morning I decided to clean and rebuild my application. And after cleaning and rebuilding I have the following error when my application runs: <strong><em>System.Windows.Markup.XamlParseException" in PresentationFramework.dll. Set connectionId threw an exception: number of line is "5" position in line is "14"</em></strong>. I've done all (clean and rebuild my application, e.t.c... in general everything that was suggested in the web to this case) but none of this helped me. You can see the error below.
  <a href="https://i.stack.imgur.com/oBCSH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oBCSH.png" alt="enter image description here"></a>
  What the reason of the error? How to eliminate it? Please help.</p>