faild to load settings windows ros

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I'm trying to use windows terminal for ros following this tutorial step 7. This is the profiles.json file when i open the setting of windows terminal:

// To view the default settings, hold "alt" while clicking on the "Settings" button. // For documentation on these settings, see: https://aka.ms/terminal-documentation

{ "$schema": "https://aka.ms/terminal-profiles-schema",

"defaultProfile": "{61c54bbd-c2c6-5271-96e7-009a87ff44bf}",

"profiles": [ { "acrylicOpacity": 0.5,

"background": "#012456", "closeOnExit": true, "colorScheme": "Campbell",

  "commandline": "C:\\Windows\\System32\\cmd.exe /k

\"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\Tools\VsDevCmd.bat\"

-arch=amd64 -host_arch=amd64 && c:\opt\ros\melodic\x64\setup.bat", "cursorColor": "#FFFFFF", "cursorShape": "bar", "fontFace": "Consolas", "fontSize": 10, "guid": "{xxxxx}", "historySize": 9001, "icon": "ms-appx:///ProfileIcons/{0caa0dad-35be-5f56-a8ff-afceeeaa6101}.png", "name": "ROS", "padding": "0, 0, 0, 0", "snapOnInput": true, "startingDirectory": "c:\ws",

  "useAcrylic": true,

 "globals": {
    "alwaysShowTabs": true,
    "copyOnSelect": false,
    "defaultProfile": "{xxxx}"
  }
},
{
  // Make changes here to the powershell.exe profile
  "guid": "{61c54bbd-c2c6-5271-96e7-009a87ff44bf}",
  "name": "Windows PowerShell",
  "commandline": "powershell.exe",
  "hidden": false
},
{
  // Make changes here to the cmd.exe profile
  "guid": "{0caa0dad-35be-5f56-a8ff-afceeeaa6101}",
  "name": "cmd",
  "commandline": "cmd.exe",
  "hidden": false
},
{


 "guid": "{b453ae62-4e3d-5e58-b989-0a998ec441b8}",
  "hidden": false,
  "name": "Azure Cloud Shell",
  "source": "Windows.Terminal.Azure"
}   ],

// Add custom color schemes to this array
"schemes": [],

// Add any keybinding overrides to this array.
// To unbind a default keybinding, set the command to "unbound"
"keybindings": []

}

i'm using windows 10, ros melodic.