Not sure if this is related, seeing below when trying to surf to sitemap.xml

Value cannot be null. Parameter name: Cannot find a content type with alias Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentNullException: Value cannot be null. Parameter name: Cannot find a content type with alias

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentNullException: Value cannot be null. Parameter name: Cannot find a content type with alias ] SEOChecker.Core.Repository.Definition.DefinitionFactory.Single(String alias) +329 SEOChecker.Core.Config.Configuration.(String , String ) +179 SEOChecker.Core.Config.Configuration.GetDocumentTypeByAlias(String alias) +13 SEOChecker.Handlers.HttpHandlers.XmlSitemapHandler.(HttpContext , List`1 , Int32 ) +93 SEOChecker.Handlers.HttpHandlers.XmlSitemapHandler.RenderXmlSiteMap(HttpContext context) +306 SEOChecker.Handlers.HttpHandlers.XmlSitemapHandler.ProcessRequest(HttpContext context) +203 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +498 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +88

Hi Richard

The file was there, tried to replace it with one from the package file with no luck

Any other ideas?

Brad

Anything in the Umbraco log files?

Full errors replace all the angle brackets with square brackets

2018-12-06 10:06:32,025 [P6348/D32/T390] ERROR SEOChecker.Trees.SEOCheckerTreeController - Unhandled controller exception occurred System.NullReferenceException: Object reference not set to an instance of an object. at SEOChecker.Core.Repository.Definition.Umbraco.UmbracoDefinition.GetChildren(String parentAlias) at SEOChecker.Trees.SEOCheckerTreeController.RenderSEOCheckerDefinitionSettings(FormDataCollection queryStrings, String parent) at Umbraco.Web.Trees.TreeControllerBase.GetNodes(String id, FormDataCollection queryStrings) at lambda_method(Closure , Object , Object[] ) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.[]cDisplayClass10.[GetExecutor]b9(Object instance, Object[] methodParameters) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ApiControllerActionInvoker.[InvokeActionAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[ExecuteActionFilterAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[ExecuteActionFilterAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[ExecuteActionFilterAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[ExecuteActionFilterAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Web.Http.Filters.ActionFilterAttribute.[CallOnActionExecutedAsync]d5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.[ExecuteActionFilterAsyncCore]d0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ActionFilterResult.[ExecuteAsync]d2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.[ExecuteAuthorizationFilterAsyncCore]d2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.[ExecuteAuthorizationFilterAsyncCore]d2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.[ExecuteAuthorizationFilterAsyncCore]d2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.[ExecuteAuthorizationFilterAsyncCore]d2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ExceptionFilterResult.[ExecuteAsync]d0.MoveNext()

So in the tree below, I can't open Data, it generates the error, but compositions and nested content open fine

Hi Bradley,

Think there is a mismatch between config and document types in Umbraco, can you send me the config file ([email protected]) What version of Umbraco and SEOChecker are you using?

Best,

Richard

Hello Richard,

I do have exactly the same problem. The same errors as Bradley.

Upgraded from 1.10.4 to 2.2.1 (Umbraco 7.12.2)

Help is very much appreciated!

Cheers, Arjan

Oh sorry forgot to reply on this forum. The problem was related to _ in document type aliasses. Fixed in hotfix below

https://www.dropbox.com/s/hrmxuyh1ceu4sbm/seo-checker22_2.zip?dl=0

Hope this helps.

Thanks again Richard!

New version of SEO Checker fixed it

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