Hi all, I try the Flutter for Desktop for the first time using https://github.com/google/flutter-desktop-embedding.git, appear the Visual Studio Installation problem when running flutter doctor command.

• The Visual Studio 2019 - Community already installed in the c:\Program Files (x86)\Microsoft Visual Studio, still problem. 
• vswhere.exe is default file In the c:\Program Files (x86)\Microsoft Visual Studio\Installer, version 2.6.7+91f4c1d09e

C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe -format json -utf8 -latest
Output :

C:\Program Files (x86)\Microsoft Visual Studio\Installer>vswhere.exe -json -utf8 -latest
Visual Studio Locator version 2.6.7+91f4c1d09e
Copyright (C) Microsoft Corporation. All rights reserved.

Error 0x57: Unknown parameter: json