ConvertTo-PnPPage unable to transform pages due to 'Method "GetList" does not exist.'

Hello

I'm trying to modernise SharePoint 2013 pages into SharePoint Online.

I'm using PnP.PowerShell 1.12.0 and PowerShell 7.3.0, though I have experienced errors with earlier versions of both.

I'm running the following commands:

$target = Connect-PnPOnline "https://TENANT.sharepoint.com/sites/modernblog" -ReturnConnection
$source = Connect-PnPOnline "http://INTRANET/sites/Publishing" -TransformationOnPrem -ReturnConnection -CurrentCredentials

ConvertTo-PnPPage -Identity "Welcome.aspx" -PublishingPage -TargetWebUrl $target -Connection $source
ConvertTo-PnPPage -identity "Blog Post" -BlogPage -TargetWebUrl $target -Connection $source

Everything appears to connect as expected, I can see the connection to the SP13 environment, but then it fails with the following error:

ConvertTo-PnPPage: Method "GetList" does not exist.

Output from Get-PnPException:

Message : Method "GetList" does not exist.
Stacktrace : at PnP.PowerShell.Commands.Base.PnPConnectedCmdlet.ProcessRecord() in c:\build\src\Commands\Base\PnPConnectedCmdlet.cs:line 79
at PnP.PowerShell.Commands.PnPSharePointCmdlet.ProcessRecord() in c:\build\src\Commands\Base\PnPSharePointCmdlet.cs:line 121
at System.Management.Automation.CommandProcessor.ProcessRecord()

I've completely removed all PnP.PowerShell instances and reinstalled but it's still the same each time.

Any help appreciated.

Reproduce the failure with the two Connect-PnPOnline commands and ConvertTo-PnPPage examples in the issue. Start at PnPConnectedCmdlet.cs line 79 and trace the reported missing GetList method; done means determining and addressing why the page conversion fails against the SharePoint 2013 source, with the supplied commands no longer producing that error.