Server Error in '/' Application.

Sequence contains no elements

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.InvalidOperationException: Sequence contains no elements

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:


[InvalidOperationException: Sequence contains no elements] System.Linq.Enumerable.First(IEnumerable`1 source) +451 Umbraco.Core.Configuration.UmbracoSettings.ContentErrorsElement.get_Error404Collection() in d:\a\1\s\src\Umbraco.Core\Configuration\UmbracoSettings\ContentErrorsElement.cs:13 Umbraco.Web.Routing.ContentFinderByConfigured404.TryFindContent(PublishedRequest frequest) in d:\a\1\s\src\Umbraco.Web\Routing\ContentFinderByConfigured404.cs:57 Umbraco.Web.Routing.PublishedRouter.HandlePublishedContent(PublishedRequest request) in d:\a\1\s\src\Umbraco.Web\Routing\PublishedRouter.cs:459 Umbraco.Web.Routing.PublishedRouter.FindPublishedContentAndTemplate(PublishedRequest request) in d:\a\1\s\src\Umbraco.Web\Routing\PublishedRouter.cs:401 Umbraco.Web.Routing.PublishedRouter.PrepareRequest(PublishedRequest request) in d:\a\1\s\src\Umbraco.Web\Routing\PublishedRouter.cs:135 Umbraco.Web.UmbracoInjectedModule.ProcessRequest(HttpContextBase httpContext) in d:\a\1\s\src\Umbraco.Web\UmbracoInjectedModule.cs:159 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +194 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +213 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +91


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3930.0