AzureFunction-Failedtostartanewlanguageworkerforruntime:dotnet-isolated

I have a dotnet 5 function app that I've been building and deploying from a devops pipeline for a couple of weeks.

Following the most recent release, I see the following error in App Insights:

Exception type System.TimeoutException
Exception message The operation has timed out.
LogLevel Error
prop__{OriginalFormat} Failed to start a new language worker for runtime: dotnet-isolated.
Category Microsoft.Azure.WebJobs.Script.Workers.Rpc.RpcFunctionInvocationDispatcher
System.TimeoutException: The operation has timed out.
at Microsoft.Azure.WebJobs.Script.Grpc.GrpcWorkerChannel.StartWorkerProcessAsync()

csproj file:

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net5.0</TargetFramework>
    <Nullable>enable</Nullable>
    <UserSecretsId>4f786da6-0d47-4ccc-b343-638a6e34e1cf</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <None Remove="local.settings.json" />
  </ItemGroup>

  <ItemGroup>
    <Content Include="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </Content>
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Abstractions" Version="2.2.0" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.2.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Abstractions" Version="1.0.0" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.0.13" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Storage" Version="4.0.4" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.0.3" />
    <PackageReference Include="Microsoft.Azure.Services.AppAuthentication" Version="1.6.1" />
    <PackageReference Include="Microsoft.Data.SqlClient" Version="3.0.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="5.0.0" />
    <PackageReference Include="NSwag.AspNetCore" Version="13.11.1" />
    <PackageReference Include="Serilog.AspNetCore" Version="4.1.0" />
    <PackageReference Include="Serilog.Sinks.ApplicationInsights" Version="3.1.0" />
    <PackageReference Include="Serilog.Sinks.MSSqlServer" Version="5.6.0" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..infrastructureSmsRouter.GovNotifySmsRouter.GovNotify.csproj" />
    <ProjectReference Include="..SmsRouter.InfrastructureSmsRouter.EntityFramework.csproj" />
    <ProjectReference Include="..SmsRouter.UtrnSmsRouter.Utrn.csproj" />
  </ItemGroup>

  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>

</Project>

host.json:

{
  "version": "2.0"
}

Function App Configuration:

[
  {
    "name": "APPINSIGHTS_INSTRUMENTATIONKEY",
    "value": "<my key is here>",
    "slotSetting": true
  },
  {
    "name": "AzureWebJobsStorage",
    "value": "DefaultEndpointsProtocol=https;AccountName=storesmsroutermsdn;AccountKey=<my key is here>;EndpointSuffix=core.windows.net",
    "slotSetting": false
  },
  {
    "name": "FUNCTIONS_EXTENSION_VERSION",
    "value": "~3",
    "slotSetting": false
  },
  {
    "name": "FUNCTIONS_WORKER_RUNTIME",
    "value": "dotnet-isolated",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_CONTENTAZUREFILECONNECTIONSTRING",
    "value": "DefaultEndpointsProtocol=https;AccountName=storesmsroutermsdn;AccountKey=<my key is here>;EndpointSuffix=core.windows.net",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_CONTENTSHARE",
    "value": "func-smsrouter-msdn-01b300",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_ENABLE_SYNC_UPDATE_SITE",
    "value": "true",
    "slotSetting": false
  },
  {
    "name": "WEBSITE_RUN_FROM_PACKAGE",
    "value": "1",
    "slotSetting": false
  }
]

Function Definition

[Function("HttpExample")]
    public static HttpResponseData Run([HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequestData req,
        FunctionContext executionContext)
    {
        var response = req.CreateResponse(HttpStatusCode.OK);
        response.Headers.Add("Content-Type", "text/plain; charset=utf-8");

        response.WriteString("Welcome to Azure Functions!");

        return response;
    }

Has anyone else run into this problem?

注意：我现在已经通过 Azure 门户为此创建了一个支持票 - id 是 2106280050000196。Github 问题在这里

编辑：根据@Kaylan 的建议，我使用 Azure CLI 创建了一个带有 --runtime dotnet-isolated 参数的新函数应用程序。然后我将我的函数部署到这个（使用 devops 管道和 Deploy Azure Function 任务），但恐怕我会继续看到相同的错误。

我还尝试部署到固定的应用程序服务计划（而不是消费），但继续遇到同样的问题。