SharePoint Modernization Framework - Help with migrating publishing pages

Hi all,

I am working on a project to migrate SharePoint 2013 publishing pages to SharePoint Online (Modern).

Using Sharegate I am able to get the content copied across to SPO, but when I try to conver the publishing pages to Modern, I get this error

I tried to use the .NET Page Tranformation Class (https://github.com/pnp/PnP/tree/master/Samples/Modernization.PageTransformation) But I have facing issues in getting the right assembly reference for:

using Microsoft.SharePoint.Client;
using OfficeDevPnP.Core;
using SharePointPnP.Modernization.Framework.Transform;

Can anyone here help me with the dll/assemblies that I should be including in my VS project? I ones that I download online do not seem to work.

Additionally if someone has the steps which are required to effectively transform the 2013 publishing pages to SPO Modern page, please share the details.

Thanks in advance for the help!

Manoj