Compile aspnetcore source execute .\restore.cmd error.

This may not be a security issue，But it's also an important question。

For reasons of learning and ascension，So need to Compile aspnetcore sourecode. However, there are many errors at compile time !!!. I spent a lot of time, but I still can't solve it. Please help me thanks:

On Windows PowerShell exec .\restore.cmd shows error:

PS C:\Users\Administrator\Desktop\aspnetcore> .\restore.cmd Building of C# project is enabled and has dependencies on NodeJS projects. Building of NodeJS projects is enabled since node is detected in C:\Program Files. Detected JDK in C:\Users\Administrator\Desktop\aspnetcore.tools\jdk\win-x64\ (via local repo convention) at Exec-Process, C:\Users\Administrator\Desktop\aspnetcore\eng\common\tools.ps1: line 79 at MSBuild-Core, C:\Users\Administrator\Desktop\aspnetcore\eng\common\tools.ps1: line 582 at InitializeToolset, C:\Users\Administrator\Desktop\aspnetcore\eng\common\tools.ps1: line 499 at , C:\Users\Administrator\Desktop\aspnetcore\build.ps1: line 384 at , : line 1 Exception calling "Start" with "0" argument(s): "系统找不到指定的文件。"

(1). I installed vs 2019: v16.8.4. I also saw BuildFromSource.md describe eng/scripts/InstallVisualStudio.ps1, but I don't know what features should be installed after exec this(InstallVisualStudio.ps1).

Here are my vs2019 installed features:

What do I need to install for vs2019 after exec eng/scripts/InstallVisualStudio.ps1 ??????????????

(2). JDK : v 11.0.3 , exec ./eng/scripts/InstallJdk.ps1 after Downloaded . However, 11.0.3 is not in the environment variable, They are automatically placed in the .tools\jdk\win-x64 folder

(3). Git: v 2.30 installed:

(4). NodeJs: v 14.15.4 installed:

(5). yarn installed:

(6). windows operating system version:

(7). global.json ;

{
  "sdk": {
    "version": "3.1.405"
  },
  "tools": {
    "dotnet": "3.1.405",
    "runtimes": {
      "dotnet/x64": [
        "$(MicrosoftNETCoreAppInternalPackageVersion)"
      ],
      "dotnet/x86": [
        "$(MicrosoftNETCoreAppInternalPackageVersion)"
      ]
    },
    "Git": "2.22.0",
    "jdk": "11.0.3",
    "vs": {
      "version": "16.0", [16.8.4 value The same error (exec restore.cmd) ]
      "components": [
        "Microsoft.VisualStudio.Component.VC.ATL",
        "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
        "Microsoft.VisualStudio.Component.Windows10SDK.17134" [?]
      ]
    }
  },
  "msbuild-sdks": {
    "Yarn.MSBuild": "1.15.2",
    "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.20213.4",
    "Microsoft.DotNet.Helix.Sdk": "2.0.0-beta.20213.4"
  }
}

To Reproduce

Exceptions (if any)

(NETCORE_ENGINEERING_TELEMETRY=InitializeToolset) Feed does not exist. Exception calling "Start" with "0" argument(s): "系统找不到指定的文件。"

Further technical details

ASP.NET Core version

Include the output of dotnet --info

C:\Users\Administrator>dotnet --info
.NET SDK (反映任何 global.json):
Version:   5.0.102
Commit:    71365b4d42

运行时环境:
OS Name:     Windows
OS Version:  10.0.18363
OS Platform: Windows
RID:         win10-x64
Base Path:   C:\Program Files\dotnet\sdk\5.0.102\

Host (useful for support):
  Version: 5.0.2
  Commit:  cb5f173b96

.NET SDKs installed:
  3.1.405 [C:\Program Files\dotnet\sdk]
  5.0.102 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.All 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

The IDE (VS / VS Code/ VS4Mac) you're running on, and its version

dotnet / aspnetcore