MVC , Microsoft.VisualStudio.Web.PageInspector.Loader, Error

Error in MVC App

@wiero: Me. Happened after installing VS 2019 Preview side-by-side with VS 2017 Community. FWIW, solution was to remove line 

<add assembly="Microsoft.VisualStudio.Web.PageInspector.Loader, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>

 from C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\web.config

OR

Add new Line to web.config

<system.web> <authentication mode="None" /> <compilation> <assemblies> <remove assembly="Microsoft.VisualStudio.Web.PageInspector.Loader, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> </assemblies> </compilation> <httpRuntime targetFramework="4.5" />