Docker Terrasoft.WebHost.dll.config

please help me what is causing this error   

#docker logs b6f87859e923

Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.

   at Terrasoft.EventSourcing.Configuration.EventStoreUtitities.GetEventSourcingConfiguration(Configuration configuration) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.EventSourcing/Configuration/EventStoreUtitities.cs:line 70

   at Terrasoft.WebHost.ApplicationModule.SetupEventStore(IServiceCollection services) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.WebHost/ApplicationModule.cs:line 227

   at Terrasoft.WebHost.ApplicationModule.Configure(IServiceCollection services) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.WebHost/ApplicationModule.cs:line 351

   at Terrasoft.Core.DI.AutofacContainerBuilder.Build() in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.Core.DI/AutofacContainerBuilder.cs:line 63

   at Terrasoft.Core.DI.ContainerBuilder.Build() in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.Core.DI/ContainerBuilder.cs:line 100

   at Terrasoft.Core.DI.ServiceProvider.ServiceProviderFactory.CreateServiceProvider(ContainerBuilder containerBuilder) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.Core.DI/ServiceProvider/ServiceProviderFactory.cs:line 23

   at Microsoft.Extensions.Hosting.Internal.ServiceFactoryAdapter`1.CreateServiceProvider(Object containerBuilder)

   at Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider()

   at Microsoft.Extensions.Hosting.HostBuilder.Build()

   at Terrasoft.WebHost.Program.StartWebApplication(String[] args) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.WebHost/Program.cs:line 26

   at Terrasoft.WebHost.Program.<>c__DisplayClass2_0.b__0(StartOptions _) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.WebHost/Program.cs:line 62

   at CommandLine.ParserResultExtensions.MapResult[T1,T2,TResult](ParserResult`1 result, Func`2 parsedFunc1, Func`2 parsedFunc2, Func`2 notParsedFunc)

   at Terrasoft.WebHost.Program.Main(String[] args) in /opt/buildagent/work/ApplicationCoreLinux/TSBpm/Src/Lib/Terrasoft.WebHost/Program.cs:line 59