VSCode无法构建项目求助：dotnet new console报JSON解析错误

执行dotnet new console创建新项目时，抛出JSON解析错误，具体错误信息如下：

'0x00' is an invalid start of a value. LineNumber: 0 | BytePositionInLine: 0.
   at System.Text.Json.ThrowHelper.ThrowJsonReaderException(Utf8JsonReader& json, ExceptionResource resource, Byte nextByte, ReadOnlySpan`1 bytes)
   at System.Text.Json.Utf8JsonReader.ConsumeValue(Byte marker)
   at System.Text.Json.Utf8JsonReader.ReadFirstToken(Byte first)
   at System.Text.Json.Utf8JsonReader.ReadSingleSegment()
   at System.Text.Json.Utf8JsonReader.Read()
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadManifestReader.Utf8JsonStreamReader.Read()
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadManifestReader.ReadStringDictionary(Utf8JsonStreamReader& reader)
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadManifestReader.ReadLocalizationCatalog(Stream localizationStream, JsonReaderOptions readerOptions)
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadManifestReader.ReadWorkloadManifest(String manifestId, Stream manifestStream, Stream localizationStream, String informationalPath)
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadResolver.LoadManifestsFromProvider(IWorkloadManifestProvider manifestProvider)
   at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadResolver.Create(IWorkloadManifestProvider manifestProvider, String dotnetRootPath, String sdkVersion, String userProfileDir)
   at Microsoft.DotNet.TemplateLocator.TemplateLocator.GetDotnetSdkTemplatePackages(String sdkVersion, String dotnetRootPath, String userProfileDir)
   at Microsoft.DotNet.Tools.New.OptionalWorkloadProvider.GetAllTemplatePackagesAsync(CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Edge.Settings.TemplatePackageManager.<>c__DisplayClass21_0.<EnsureProvidersLoaded>b__2()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.<>c.<.cctor>b__272_0(Object obj)
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location ---
   at Microsoft.TemplateEngine.Edge.Settings.TemplatePackageManager.GetTemplatePackagesAsync(Boolean force, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Edge.Settings.TemplatePackageManager.UpdateTemplateCacheAsync(Boolean needsRebuild, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Edge.Settings.TemplatePackageManager.GetTemplatesAsync(CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.TemplateResolution.BaseTemplateResolver.GetTemplateGroupsAsync(CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.TemplateResolution.InstantiateTemplateResolver.ResolveTemplatesAsync(INewCommandInput commandInput, String defaultLanguage, CancellationToken cancellationToken)
   at Microsoft.TemplateEngine.Cli.TemplateInvocationCoordinator.CoordinateInvocationAsync(INewCommandInput commandInput, CancellationToken cancellationToken)       
   at Microsoft.TemplateEngine.Cli.New3Command.EnterTemplateManipulationFlowAsync(INewCommandInput commandInput)
   at Microsoft.TemplateEngine.Cli.New3Command.ExecuteAsync(INewCommandInput commandInput)
   at Microsoft.TemplateEngine.Cli.New3Command.ActualRun(String commandName, ITemplateEngineHost host, ITelemetryLogger telemetryLogger, New3Callbacks callbacks, String[] args, String hivePath)

此外，手动编写的C#项目无法正常运行：选择.NET5或.NET Core框架后无任何响应。已尝试卸载并重新安装VSCode，问题未解决。

• 重建.NET模板缓存
  执行命令：

  dotnet new --debug:rebuildtemplatecache
  

• 重置.NET Workload
  1. 查看已安装的workload：

     dotnet workload list
     

  2. 卸载所有workload：

     dotnet workload uninstall --all
     

  3. 重新恢复workload：

     dotnet workload restore
     

• 删除用户模板缓存目录
  • Windows：删除%USERPROFILE%\.templateengine文件夹
  • macOS/Linux：删除~/.templateengine文件夹
• 修复.NET SDK
  执行命令：

  dotnet --repair
  

• 检查并清理损坏的Workload Manifest文件
  找到.NET SDK安装目录下的workloads文件夹（例如Windows默认路径为C:\Program Files\dotnet\sdk\<你的SDK版本>\workloads），检查其中的JSON文件是否存在损坏（比如空文件、乱码），删除异常文件后重新执行dotnet workload restore

内容的提问来源于stack exchange，提问作者Justice