Upgrading to AzureWebJobs 3.0 sdk Host Not running error from webjob dashboard

gistfile1.txt

using Microsoft.Azure.WebJobs;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Jpprocessor
{
public class WebJPProcessor
{
               var builder = new HostBuilder();                
                builder.ConfigureLogging(tr =>
                {
                    tr.SetMinimumLevel(LogLevel.Information);
                });
                builder.ConfigureAppConfiguration((builderContext, cb) =>
                {
                    cb.AddInMemoryCollection(new Dictionary<string, string>()
                    {
                        { "AzureWebJobsDashboard", AzureStorageConnectionString },
                        { "AzureWebJobsStorage", AzureStorageConnectionString }
                    });
                });
                builder.ConfigureWebJobs(b =>
                {
                    // b.AddAzureStorageCoreServices(); cannot find in the expected packages.
                    b.UseHostId(GetHostId());       // is this the right way to set hostif in 3.0 version?  GetHostId() is private method gets machinename             
                    b.AddAzureStorage(q =>
                    {
                        q.MaxDequeueCount = 1;
                        q.MaxPollingInterval = TimeSpan.FromSeconds(15);
                    });
                });
                

                try
                {
                    using (var host = builder.Build())
                    {
                        Logger.LogInfo($"{nameof(AzureWebJobProcessor)} starting jobHost with hostid {GetHostId()}");
                        host.RunAsync().Wait();
                        Logger.LogInfo($"{nameof(AzureWebJobProcessor)} exiting jobHost");
                    }
                }
                catch (Exception ex)
                {
                    Logger.LogError($"{nameof(AzureWebJobProcessor)}/RunAsync WebJob exception: {ex.ToString()} {ex.InnerException.Message}");
                }
                
                
                public static void ExecuteAnBUtility(
            [QueueTrigger("anbutility")] string arguments,
            TextWriter textLogger)
        {
            lock (syncRoot)
            {
                trackingId = ThreadContext.GenerateTrackingId();
                try
                {
                    CustomTraceListener.TryAdd(textLogger, trackingId);
                    Trace.WriteLine($"QueueTrigger anbutility got arguments: {arguments}");
                    AnBUtilityJob.Run(arguments, textLogger);
                }
                catch (Exception ex)
                {
                    Trace.WriteLine($"Exception:{ex}", traceErrorCategory);
                    throw;
                }
                finally
                {
                    CustomTraceListener.TryRemove();
                }
            }
        }