title: Assets file project.assets.json not found. Run a NuGet package restore
body: <p>I'm trying to use nopCommerce(Which is written in .NET Core) but when I want to run the project I face 52 Errors telling me Run a nuget package restore </p>
  
  <blockquote>
    <p>Assets file ~\obj\project.<strong>assets.json'</strong> not found. Run a NuGet package restore to generate this file.  Nop.Web.MVC.Testsote</p>
  </blockquote>
  
  <p>when I use the right click on the solution and selecting Restore Nuget Packages I get this message:  </p>
  
  <blockquote>
    <p>All packages are already installed and there is nothing to restore.</p>
  </blockquote>
  
  <p>but those 52 Errors are still there and in <strong><em>Tools -> NuGet Package Manager -> Manage NuGet Packages for Solution</em></strong>  there is nothing installed on the solution,also I Recently updated my VS2017 to 15.5.4</p>