Incompatible with Serilog.AspNetCore

I’m not sure if this is an issue that would need to be fixed on the side of serilog/serilog-aspnetcore or sentry, but currently they cannot be used together.

The following code results in an exception on startup:

public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
    WebHost.CreateDefaultBuilder(args)
        .UseStartup<Startup>()
        .UseSentry()
        .UseSerilog();

λ dotnet run
Using launch settings from C:\Users\Mitchell\source\repos\WebApplication4\WebApplication4\Properties\launchSettings.json...
Application startup exception: System.NullReferenceException: Object reference not set to an instance of an object.
   at Sentry.SentryOptionsExtensions.AddEventProcessorProvider(SentryOptions options, Func`1 processorProvider) in C:\projects\sentry-dotnet\src\Sentry\SentryOptionsExtensions.cs:line 80
   at Microsoft.AspNetCore.Builder.ApplicationBuilderExtensions.UseServiceProviderProcessors(IServiceProvider provider) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\ApplicationBuilderExtensions.cs:line 37
   at Microsoft.AspNetCore.Builder.ApplicationBuilderExtensions.UseSentry(IApplicationBuilder app) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\ApplicationBuilderExtensions.cs:line 26
   at Sentry.AspNetCore.SentryStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder e) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\SentryStartupFilter.cs:line 13
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.AutoRequestServicesStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()

Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
   at Sentry.SentryOptionsExtensions.AddEventProcessorProvider(SentryOptions options, Func`1 processorProvider) in C:\projects\sentry-dotnet\src\Sentry\SentryOptionsExtensions.cs:line 80
   at Microsoft.AspNetCore.Builder.ApplicationBuilderExtensions.UseServiceProviderProcessors(IServiceProvider provider) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\ApplicationBuilderExtensions.cs:line 37
   at Microsoft.AspNetCore.Builder.ApplicationBuilderExtensions.UseSentry(IApplicationBuilder app) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\ApplicationBuilderExtensions.cs:line 26
   at Sentry.AspNetCore.SentryStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder e) in C:\projects\sentry-dotnet\src\Sentry.AspNetCore\SentryStartupFilter.cs:line 13
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.Internal.AutoRequestServicesStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.StartAsync(CancellationToken cancellationToken)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.RunAsync(IWebHost host, CancellationToken token, String shutdownMessage)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.RunAsync(IWebHost host, CancellationToken token)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(IWebHost host)
   at WebApplication4.Program.Main(String[] args) in C:\Users\Mitchell\source\repos\WebApplication4\WebApplication4\Program.cs:line 18

[Mitch528]

@bruno-garcia Great, thanks!

[bruno-garcia]

If you are using on prem please note the last release doesn’t work if you don’t have nginx or something which supports chunked requests. You have disabled gzip requests to work around it. Master has it fixed and it will be on nuget soon when we publish preview5