bradley_b
Nintex Newbie

Error Starting RPA Central Service

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Error Starting Service.  See log below.  All bots are down.  I have a case but support has been unresponsive.  All of my bots are down and no one can access RPA Central.

 

Microsoft.AspNetCore.Hosting.Internal.WebHost
Application startup exception

Autofac.Core.DependencyResolutionException: An exception was thrown while activating Microsoft.AspNetCore.Server.HttpSys.MessagePump. ---> Autofac.Core.DependencyResolutionException: An exception was thrown while invoking the constructor 'Void .ctor(Microsoft.Extensions.Options.IOptions`1[Microsoft.AspNetCore.Server.HttpSys.HttpSysOptions], Microsoft.Extensions.Logging.ILoggerFactory, Microsoft.AspNetCore.Authentication.IAuthenticationSchemeProvider)' on type 'MessagePump'. ---> System.InvalidOperationException: Failed to convert configuration value to type 'System.Int32'. ---> System.ArgumentException: is not a valid value for Int32.
Parameter name: value ---> System.IndexOutOfRangeException: Index was outside the bounds of the array.
at System.ComponentModel.BaseNumberConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
--- End of inner exception stack trace ---
at System.ComponentModel.BaseNumberConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
at Microsoft.Extensions.Configuration.ConfigurationBinder.TryConvertValue(Type type, String value, Object& result, Exception& error)
--- End of inner exception stack trace ---
at Microsoft.Extensions.Configuration.ConfigurationBinder.BindInstance(Type type, Object instance, IConfiguration config, BinderOptions options)
at Microsoft.Extensions.Configuration.ConfigurationBinder.BindProperty(PropertyInfo property, Object instance, IConfiguration config, BinderOptions options)
at Microsoft.Extensions.Configuration.ConfigurationBinder.BindNonScalar(IConfiguration configuration, Object instance, BinderOptions options)
at Microsoft.Extensions.Configuration.ConfigurationBinder.BindInstance(Type type, Object instance, IConfiguration config, BinderOptions options)
at Microsoft.Extensions.Configuration.ConfigurationBinder.Get[T](IConfiguration configuration, Action`1 configureOptions)
at RpaCentral.ServiceHost.Program.<>c.<CreateWebHostBuilder>b__2_0(HttpSysOptions options) in D:\a\1\s\FoxCentral.ServiceHost\Program.cs:line 116
at Microsoft.Extensions.Options.OptionsFactory`1.Create(String name)
at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
at System.Lazy`1.CreateValue()
at Microsoft.AspNetCore.Server.HttpSys.MessagePump..ctor(IOptions`1 options, ILoggerFactory loggerFactory, IAuthenticationSchemeProvider authentication)
at lambda_method(Closure , Object[] )
at Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate()
--- End of inner exception stack trace ---
at Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate()
at Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters)
at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters, Object& decoratorTarget)
--- End of inner exception stack trace ---
at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters, Object& decoratorTarget)
at Autofac.Core.Lifetime.LifetimeScope.GetOrCreateAndShare(Guid id, Func`1 creator)
at Autofac.Core.Resolving.InstanceLookup.Execute()
at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable`1 parameters)
at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable`1 parameters)
at Autofac.ResolutionExtensions.TryResolveService(IComponentContext context, Service service, IEnumerable`1 parameters, Object& instance)
at Autofac.ResolutionExtensions.ResolveService(IComponentContext context, Service service, IEnumerable`1 parameters)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureServer()
at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()

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3 Replies
riderrpa
Nintex Newbie

Re: Error Starting RPA Central Service

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Have you attempted a "repair" on Nintex Central through Programs & Features.  I have ran into a very similar issue that I could not find the root cause of what caused the initial issue, but by performing a repair on the installation it resolved the issue.

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bradley_b
Nintex Newbie

Re: Error Starting RPA Central Service

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Thank you for the reply.  I did try the repair, which has worked in the past, but not in this case.  I ended up removing and reinstalling RPA Central.  Thanks!

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adithepo
Nintex Newbie

Re: Error Starting RPA Central Service

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What about the existing BOTs ? Do we need any backup process before re-install ?

 

Thank you.

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