# Application startup exception **URL:** \ **Category:** APM\ **Tags:** dotnet\ **Created:** [December 20, 2022, 12:23pm UTC](https://discuss.elastic.co/t/application-startup-exception/321640 "2022-12-20T12:23:16Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Vincent7326](https://avatars.discourse-cdn.com/v4/letter/v/9f8e36/32.png) [@Vincent7326](https://discuss.elastic.co/u/Vincent7326)\ **Post date:** [December 20, 2022, 12:23pm UTC](https://discuss.elastic.co/t/application-startup-exception/321640/1 "2022-12-20T12:23:16Z")
I just upgrade elasticsearch, kibana and elasticagent(fleet and apm) from 8.4.3 to 8.5.3 Then I cannot receive any apm transactions ... After, I downgrade elastic agent to 8.4.3, and my application got problem ... The log list below **Kibana version** : 8.5.3 **Elasticsearch version** : 8.5.3 **APM Server version** : 8.4.3 **APM Agent language and version** : .net core, 1.18.0/1.19.0 **Original install method (e.g. download page, yum, deb, from source, etc.) and version**: **Fresh install or upgraded from other version?** upgrade from 8.4.3 to 8.5.3 **Provide logs and/or server output (if relevant)**: ```auto [DEBUG] 2022-12-20T08:04:05.3774906-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} Service name provided in configuration is MyProject [INFORMATION] 2022-12-20T08:04:05.4924238-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} The agent was started without a service version. The service version will be automatically discovered. [INFORMATION] 2022-12-20T08:04:05.4965594-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} The agent was started without a service version. The automatically discovered service version is 1.0.0 [DEBUG] 2022-12-20T08:04:05.5721500-04:00 [] - {SystemInfoHelper} Found Kubernetes pod UID: fabd28e4-5866-47c8-bda1-fa8a64499bf7 [DEBUG] 2022-12-20T08:04:05.6887434-04:00 [] - {BackendCommUtils} Building HTTP client with BaseAddress: http://apm-server/ for BackendCommComponentBase (PayloadSenderV2)... [DEBUG] 2022-12-20T08:04:05.6973034-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} UseWindowsCredentials configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.8853329-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} GlobalLabels configuration option doesn't have a valid value - using default (empty map) [DEBUG] 2022-12-20T08:04:05.8940048-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} MaxQueueEventCount configuration option doesn't have a valid value - using default: 1000 [DEBUG] 2022-12-20T08:04:05.8964154-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} MaxBatchEventCount configuration option doesn't have a valid value - using default: 10 [DEBUG] 2022-12-20T08:04:05.9011967-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} FlushInterval configuration option doesn't have a valid value - using default: 00:00:10 [DEBUG] 2022-12-20T08:04:05.9062037-04:00 [] - {PayloadSenderV2} Using the following configuration options: Events intake API absolute URL: http://apm-server/intake/v2/events, FlushInterval: 10s, MaxBatchEventCount: 10, MaxQueueEventCount: 1000 [DEBUG] 2022-12-20T08:04:05.9701147-04:00 [] - {BackendCommComponentBase (PayloadSenderV2)} Waiting for work loop started event... [DEBUG] 2022-12-20T08:04:05.9717383-04:00 [] - {BackendCommComponentBase (PayloadSenderV2)} Signaling work loop started event... [DEBUG] 2022-12-20T08:04:05.9724314-04:00 [] - {BackendCommComponentBase (PayloadSenderV2)} Work loop started signaled [DEBUG] 2022-12-20T08:04:05.9860694-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9864938-04:00 [] - {BackendCommUtils} Building HTTP client with BaseAddress: http://apm-server/ for BackendCommComponentBase (CentralConfigurationFetcher)... [DEBUG] 2022-12-20T08:04:05.9868954-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} UseWindowsCredentials configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9884932-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9887207-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9889403-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9893038-04:00 [] - {CentralConfigurationFetcher} Central configuration feature is enabled because CentralConfig option's value is True (default value is True) [DEBUG] 2022-12-20T08:04:05.9895850-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:05.9899577-04:00 [] - {AbstractConfigurationReader (MicrosoftExtensionsConfig)} CentralConfig configuration option doesn't have a valid value - using default: True [DEBUG] 2022-12-20T08:04:06.0775425-04:00 [] - {CentralConfigurationFetcher} Combined absolute URL for APM Server get central configuration endpoint: `http://apm-server/config/v1/agents?service.name=MyProject&service.environment=Staging'. Service: Service{Name: MyProject, Version: 1.0.0, Environment: Staging, Runtime: Runtime{Name: .NET 5, Version: 5.0.17}, Framework: null, Agent: AgentC{Name: dotnet, Version: 1.18.0+31bb64353e9cc005906ea29bc086604fcdeda388}, Language: null, Node: Node{ConfiguredName: null}}. [DEBUG] 2022-12-20T08:04:06.0794634-04:00 [] - {BackendCommComponentBase (CentralConfigurationFetcher)} Waiting for work loop started event... [DEBUG] 2022-12-20T08:04:06.0796484-04:00 [] - {BackendCommComponentBase (CentralConfigurationFetcher)} Signaling work loop started event... [DEBUG] 2022-12-20T08:04:06.0802032-04:00 [] - {BackendCommComponentBase (CentralConfigurationFetcher)} Work loop started signaled [INFORMATION] 2022-12-20T08:04:07.1741186-04:00 [] - {MetricsCollector} Collecting metrics in 30000 milliseconds interval [DEBUG] 2022-12-20T08:04:07.2879246-04:00 [] - {HttpDiagnosticListener} Current runtime is not detected as Full Framework - returning implementation for Core. RuntimeInformation.FrameworkDescription: {RuntimeInformation.FrameworkDescription} [DEBUG] 2022-12-20T08:04:07.3770592-04:00 [] - {DiagnosticInitializer} Subscribed Elastic.Apm.DiagnosticListeners.HttpDiagnosticListenerCoreImpl to `HttpHandlerDiagnosticListener' events source [DEBUG] 2022-12-20T08:04:07.3895688-04:00 [] - {DiagnosticInitializer} Subscribed Elastic.Apm.SqlClient.SqlClientDiagnosticListener to `SqlClientDiagnosticListener' events source [DEBUG] 2022-12-20T08:04:07.4643053-04:00 [] - {DiagnosticInitializer} Subscribed Elastic.Apm.SqlClient.SqlClientDiagnosticListener to `SqlClientDiagnosticListener' events source [FATAL] 2022-12-20T08:04:07.4880027-04:00 [] - Application startup exception System.MissingFieldException: Field not found: 'Elasticsearch.Net.Diagnostics.TypedDiagnosticObserverBase`1.ckingField'. at Elasticsearch.Net.Diagnostics.TypedDiagnosticObserverBase`1..ctor(Action`1 onNext, Action`1 onError, Action onCompleted) at Elasticsearch.Net.Diagnostics.AuditDiagnosticObserver..ctor(Action`1 onNext, Action`1 onError, Action onCompleted) at Elastic.Apm.Elasticsearch.AuditDiagnosticsListener..ctor(IApmAgent agent) at Elastic.Apm.Elasticsearch.ElasticsearchDiagnosticsSubscriber.Subscribe(IApmAgent agentComponents) at Elastic.Apm.ApmAgentExtensions.Subscribe(IApmAgent agent, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.AspNetCore.ApmMiddlewareExtension.UseElasticApm(IApplicationBuilder builder, ApmAgent agent, IApmLogger logger, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.AspNetCore.ApmMiddlewareExtension.UseElasticApm(IApplicationBuilder builder, IConfiguration configuration, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.NetCoreAll.ApmMiddlewareExtension.UseAllElasticApm(IApplicationBuilder builder, IConfiguration configuration) at MyProject.Backend.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env, ICorsOriginValidator originValidator, ILogger`1 logger) in /src/MyProject.Backend/Startup.cs:line 287 at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c __DisplayClass4_0.b__ 0(IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c __DisplayClass15_0.b__ 1(IApplicationBuilder app) at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c __DisplayClass0_0.g__ MiddlewareFilterBuilder|0(IApplicationBuilder builder) at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c __DisplayClass0_0.b__ 0(IApplicationBuilder app) at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken) Unhandled exception. System.MissingFieldException: Field not found: 'Elasticsearch.Net.Diagnostics.TypedDiagnosticObserverBase`1.ckingField'. at Elasticsearch.Net.Diagnostics.TypedDiagnosticObserverBase`1..ctor(Action`1 onNext, Action`1 onError, Action onCompleted) at Elasticsearch.Net.Diagnostics.AuditDiagnosticObserver..ctor(Action`1 onNext, Action`1 onError, Action onCompleted) at Elastic.Apm.Elasticsearch.AuditDiagnosticsListener..ctor(IApmAgent agent) at Elastic.Apm.Elasticsearch.ElasticsearchDiagnosticsSubscriber.Subscribe(IApmAgent agentComponents) at Elastic.Apm.ApmAgentExtensions.Subscribe(IApmAgent agent, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.AspNetCore.ApmMiddlewareExtension.UseElasticApm(IApplicationBuilder builder, ApmAgent agent, IApmLogger logger, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.AspNetCore.ApmMiddlewareExtension.UseElasticApm(IApplicationBuilder builder, IConfiguration configuration, IDiagnosticsSubscriber[] subscribers) at Elastic.Apm.NetCoreAll.ApmMiddlewareExtension.UseAllElasticApm(IApplicationBuilder builder, IConfiguration configuration) at MyProject.Backend.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env, ICorsOriginValidator originValidator, ILogger`1 logger) in /src/MyProject.Backend/Startup.cs:line 287 at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c __DisplayClass4_0.b__ 0(IApplicationBuilder builder) at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c __DisplayClass15_0.b__ 1(IApplicationBuilder app) at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c __DisplayClass0_0.g__ MiddlewareFilterBuilder|0(IApplicationBuilder builder) at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c __DisplayClass0_0.b__ 0(IApplicationBuilder app) at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken) at Microsoft.Extensions.Hosting.Internal.Host.StartAsync(CancellationToken cancellationToken) at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token) at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token) at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.Run(IHost host) at MyProject.Backend.Program.Main(String[] args) in /src/MyProject.Backend/Program.cs:line 14 ``` ---
**Author:** ![GregKalapos](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/gregkalapos/32/37205_2.png) [@GregKalapos](https://discuss.elastic.co/u/GregKalapos)\ **Post date:** [December 20, 2022, 3:05pm UTC](https://discuss.elastic.co/t/application-startup-exception/321640/2 "2022-12-20T15:05:34Z")
Hi @Vincent7326, sorry to hear this - this should not happen, so we are looking into this. It's likely something we'll need to fix. Could you tell me which .NET Elasticsearch client package you use including the version? You'd see this in your application's `.csproj` file. It should be something like `Elasticsearch.Net `, `NEST`, or `Elastic.Clients.Elasticsearch`. Which one of those you have in your app, and what's the version of those? This would help us to reproduce the issue and then find a fix. Thanks, and again sorry for the trouble. ---
**Author:** ![Vincent7326](https://avatars.discourse-cdn.com/v4/letter/v/9f8e36/32.png) [@Vincent7326](https://discuss.elastic.co/u/Vincent7326)\ **Post date:** [December 21, 2022, 3:27am UTC](https://discuss.elastic.co/t/application-startup-exception/321640/3 "2022-12-21T03:27:07Z")
I just install these two packages `Elastic.Apm.dll` - 1.18.0.0 `Elastic.Apm.NetCoreAll.dll` - 1.18.0.0 After build I also have `Elasticsearch.Net.dll` - 7.6.0.0 Don't have `NEST.dll`, `Elastic.Clients.Elasticsearch.dll` I also tried `Elastic.Apm`/`Elastic.Apm.NetCore` version 1.19 and it didn't improve. I am using `UseElasticApm` instead of `UseElasticApmAll` and not using `AuditDiagnosticsListener` for now as a temporary solution. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 10, 2023, 11:27pm UTC](https://discuss.elastic.co/t/application-startup-exception/321640/4 "2023-01-10T23:27:49Z")
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