Template Entry Missing ConfigMounPointId

gistfile1.txt

{
  "MountPointUri": "/usr/local/share/dotnet/templates/3.1.16/microsoft.dotnet.winforms.projecttemplates.4.8.1-servicing.21213.7.nupkg",
  "Author": "Microsoft",
  "Classifications": [
    "Common",
    "WinForms"
  ],
  "DefaultName": "WinFormsApp1",
  "Description": "A project for creating a .NET Core Windows Forms (WinForms) Application",
  "Identity": "Microsoft.Common.WinForms",
  "GeneratorId": "0c434df7-e2cb-4dee-b216-d7c58c8eb4b3",
  "GroupIdentity": "Microsoft.Common.WinForms",
  "Precedence": 3000,
  "Name": "Windows Forms (WinForms) Application",
  "ShortNameList": [
    "winforms"
  ],
  "Tags": {
    "language": {
      "DisplayName": null,
      "Description": null,
      "Choices": {
        "C#": {
          "DisplayName": "",
          "Description": ""
        }
      },
      "DefaultValue": "C#"
    },
    "type": {
      "DisplayName": null,
      "Description": null,
      "Choices": {
        "project": {
          "DisplayName": "",
          "Description": ""
        }
      },
      "DefaultValue": "project"
    },
    "Framework": {
      "DisplayName": "",
      "Description": "The target framework for the project.",
      "Choices": {
        "netcoreapp3.0": {
          "DisplayName": "",
          "Description": "Target netcoreapp3.0"
        }
      },
      "DefaultValue": "netcoreapp3.0"
    }
  },
  "CacheParameters": {
    "name": {
      "DataType": "string",
      "DefaultValue": null,
      "DisplayName": "",
      "Description": "The default name symbol"
    },
    "TargetFrameworkOverride": {
      "DataType": "string",
      "DefaultValue": "",
      "DisplayName": "",
      "Description": "Overrides the target framework"
    },
    "langVersion": {
      "DataType": "text",
      "DefaultValue": "",
      "DisplayName": "",
      "Description": "Sets langVersion in the created project file"
    },
    "skipRestore": {
      "DataType": "bool",
      "DefaultValue": "false",
      "DisplayName": "",
      "Description": "If specified, skips the automatic restore of the project on create."
    }
  },
  "ConfigPlace": "/WinFormsApplication-CSharp/.template.config/template.json",
  "LocaleConfigPlace": null,
  "HostConfigPlace": "/WinFormsApplication-CSharp/.template.config/dotnetcli.host.json",
  "ThirdPartyNotices": null,
  "BaselineInfo": {},
  "HasScriptRunningPostActions": false
}