modernization: Failed to modernize page, Index out of range error

Category

[ ] Bug

Problem Area

[ ] Page Transformation: Error during the use of page transformation from PnP PowerShell

Expected or Desired Behavior

The page should be transformed to modern normally.

Observed Behavior

Transformation failed and Index out of range exception is thrown

Steps to Reproduce

I’m using PnP version 3.13.19 and running the sample powershell script of pages transformation and just changing the site URL and it throws the below error on the attached homepage:

ConvertTo-PnPClientSidePage : Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
At C:\Users\gmohamed\source\repos\SharePointOnline-Migration-Tool\PowerShell
Scripts\ModernizationScripts\ModernizingPages.ps1:27 char:27
+ ... odernPage = ConvertTo-PnPClientSidePage -Identity $page.FieldValues[" ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : WriteError: (:) [ConvertTo-PnPClientSidePage], ArgumentOutOfRangeException
    + FullyQualifiedErrorId : EXCEPTION,SharePointPnP.PowerShell.Commands.ClientSidePages.ConvertToClientSidePage

Get-PnPException output:

Message          : Index was out of range. Must be non-negative and less than the size of the collection.
                   Parameter name: index
Stacktrace       :    at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument,
                   ExceptionResource resource)
                      at SharePointPnP.Modernization.Framework.Transform.ContentTransformator.LastColumnOrder(Int32
                   row, Int32 col)
                      at SharePointPnP.Modernization.Framework.Transform.ContentTransformator.Transform(List`1
                   webParts)
                      at SharePointPnP.Modernization.Framework.Transform.PageTransformator.Transform(PageTransformation
                   Information pageTransformationInformation)
                      at SharePointPnP.PowerShell.Commands.ClientSidePages.ConvertToClientSidePage.ExecuteCmdlet()
                      at SharePointPnP.PowerShell.Commands.PnPCmdlet.ProcessRecord()
ScriptLineNumber : 27