Description

When creating a content test and visiting the tested page, the Optimization tab might not show any results except for the following message:

No data has been set.

Also, the following error can appear in the log records:

ERROR PostSessionEndPipeline failed.
Exception: System.InvalidOperationException
Message: Sequence contains no matching element
Source: System.Core
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
   at Sitecore.ContentTesting.Pipelines.ConvertToXConnectInteraction.ConvertPersonalizationEvent.IsOriginal(TestSet testSet, TestCombination combination, Guid roleSetId)
   at Sitecore.ContentTesting.Pipelines.ConvertToXConnectInteraction.ConvertPersonalizationEvent.<>c__DisplayClass0_1.<Process>b__3(PersonalizationRuleData r)
   at System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Sitecore.ContentTesting.Pipelines.ConvertToXConnectInteraction.ConvertPersonalizationEvent.Process(ConvertToXConnectInteractionPipelineArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Analytics.XConnect.DataAccess.PipelineBasedModelConverter.<>c__DisplayClass6_0.<ConvertToXConnectInteraction>b__0()
   at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.Monitor[T](OperationPerformanceMonitorBase monitor, Func`1 operation)
   at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.<>c__DisplayClass19_0.<SaveVisit>b__1(IXdbContext xdbContext)
   at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.<>c__DisplayClass31_0.<ExecuteWithExceptionHandling>b__0(IXdbContext c)
   at Sitecore.Analytics.XConnect.DataAccess.XConnectDataAdapterProvider.ExecuteWithExceptionHandling[T](Func`2 func)
   at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.<>c__DisplayClass1_0.<Monitor>b__0()
   at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.Monitor[T](OperationPerformanceMonitorBase monitor, Func`1 operation)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Analytics.Pipelines.SubmitSessionContext.SubmitSessionContextPipeline.Run(SubmitSessionContextArgs args)
   at Sitecore.Analytics.Data.HttpSessionContextManager.Submit(Session session)
   at Sitecore.Analytics.Pipelines.CommitSession.SubmitSession.Process(CommitSessionPipelineArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Analytics.Pipelines.CommitSession.CommitSessionPipeline.<>c__DisplayClass4_0.<Run>b__0()
   at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.<>c__DisplayClass1_0.<Monitor>b__0()
   at Sitecore.Analytics.XConnect.Diagnostics.PerformanceCounters.OperationPerformanceMonitorExtensions.Monitor[T](OperationPerformanceMonitorBase monitor, Func`1 operation)
   at Sitecore.Analytics.Pipelines.PostSessionEnd.CommitSession.Process(PostSessionEndArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at Sitecore.Pipelines.EndSession.PostSessionEndPipeline.Run(PostSessionEndArgs args)
   at Sitecore.Web.Application.RaiseSessionEndEvent(HttpApplication context)

Solution

To resolve the issue, consider one of the following options:

• Upgrade Sitecore XP instance to Sitecore XP 9.3 or later.
• Download and install the hotfix compatible with the affected product version:
  
  • For Sitecore XP 9.2: SC Hotfix 401181-1.zip
  • For Sitecore XP 9.1.0: SC Hotfix 328522-1.zip

  Be aware that the hotfixes were built for specific Sitecore XP versions, and must not be installed on other Sitecore XP versions or in combination with other hotfixes. In case any other hotfixes have already been installed on a certain Sitecore XP instance, send a request for a compatibility check to Sitecore Support.

  Note that the ZIP file contents must be extracted to locate installation instructions and related files inside. The hotfixes must be installed on a CM instance and then synced with other instances using standard development practices.

• For Sitecore XP 9.0.1 and earlier, download and install the patch compatible with the affected product version found on this page: https://github.com/SitecoreSupport/Sitecore.Support.287210/releases