Description

Upgrading Sitecore Experience Accelerator (SXA) from 9.3 to 10.2 version might fail when having both Sitecore JavaScript Services (JSS) and SXA sites and settings in the Content Tree. The issue occurs while updating the existing content after the new SXA package has been installed.

When you click the Upgrade link, the PowerShell Script Results dialog displays all the upgrade steps for your installation. An upgrade of the Fix Jss Sites Dictionary:

• (with the Dry run option checked) results in the following message in the Sitecore Powershell (SPE) log:

  Upgrade step result: Error (without details)

  and the following message in the console:

  WhatIf: Performing the operation "Import functions" on target
  "master:\system\Modules\PowerShell\Script Library\SXA\SXA - Scaffolding\Functions\Cmdlets\Get-UniqueItem".

• (when clicking Proceed with the Dry run option unchecked) results in the following error in the SPE log:

  ERROR Error while performing timed 'script execution in ScriptSession '$scriptSession$|pz2lzmowpkjrwsrjums5xktp|21b7d3c8-32d8-4f8e-9c4a-724c08ed44fe'' operation within 2273 ms. Exception logged at operation origin point.
  ERROR Error while executing PowerShell script.
  Exception: System.Management.Automation.RuntimeException
  Message: Upgrade step 'Fix Jss Sites Dictionary' returns incorrect result of type [System.Object[]]. But should be [Sitecore.XA.Foundation.Upgrade.Model.UpgradeStepResult]
  Source: System.Management.Automation
  at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
  at System.Management.Automation.PowerShell.Worker.ConstructPipelineAndDoWork(Runspace rs, Boolean performSyncInvoke)
  at System.Management.Automation.PowerShell.Worker.CreateRunspaceIfNeededAndDoWork(Runspace rsToUse, Boolean isSync)
  at System.Management.Automation.PowerShell.CoreInvokeHelper[TInput,TOutput](PSDataCollection`1 input, PSDataCollection`1 output, PSInvocationSettings settings)
  at System.Management.Automation.PowerShell.CoreInvoke[TInput,TOutput](PSDataCollection`1 input, PSDataCollection`1 output, PSInvocationSettings settings)
  at System.Management.Automation.PowerShell.Invoke(IEnumerable input, PSInvocationSettings settings)
  at Spe.Core.Host.ScriptSession.ExecuteCommand(Boolean stringOutput, Boolean marshallResults)
  ... 

Solution

To resolve the issue, download and install the corresponding cumulative hotfix available in KB1001328.