The specified deps.json '$$$' does not exist

Question

I am rather new to the .NET Core, and I got a .NET Core WebAPI project MyWebApp,
also, i have .Net Core Class Library project MyLib using EntityFrameworkCore

When i try to use Add-Migration, i get the error
The specified deps.json [...\MyWebApp\bin\Debug\netcoreapp1.1\MyWebApp.deps.json] does not exist

Inspecting the folder, I noticed I have this a file in [...\MyWebApp\bin\Debug\netcoreapp1.1\win10-x64\MyWebApp.deps.json]

but i really can't figure what i am supposed to do to resolve this.

myWebApi project.json:

{
  "dependencies": {
  "ShopManager": "1.0.0-*",
  "Microsoft.AspNetCore.StaticFiles": "1.1.0",
  "Microsoft.AspNetCore.Mvc": "1.1.0",
  "Microsoft.AspNetCore.Server.IISIntegration": "1.1.0",
  "Microsoft.AspNetCore.Server.Kestrel": "1.1.0",
  "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0",
  "Microsoft.Extensions.Configuration.FileExtensions": "1.1.0",
  "Microsoft.Extensions.Configuration.Json": "1.1.0",
  "Microsoft.Extensions.Logging": "1.1.0",
  "Microsoft.Extensions.Logging.Console": "1.1.0",
  "Microsoft.Extensions.Logging.Debug": "1.1.0",
  "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0",
  "Microsoft.NETCore.App": "1.1.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },
  "runtimes": {
    "win10-x64": ""
  },
  "frameworks": {
    "netcoreapp1.1": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "Areas/**/Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

Answer 1

runtimes section in project.json looks suspicious. As soon as you build for one runtime only - there is no need to use it.

Remove it and rewrite dependency from "Microsoft.NETCore.App":"1.1.0" to "Microsoft.NETCore.App": { "type": "platform", "version": "1.1.0" }.

This will change your app deployment model from "self-contained" (can run on specific platform even without framework) to "framework-dependent" (may run on any platform with framework installed). Details are here.