Migrate Libraries using ShareGate's Copy Site Object misses DispForm.aspx for the library

I've noticed an issue with using ShareGate's Copy Site Object to migrate SharePoint libaries from one SharePoint Online site to another.  I migrated the libraries without content. It's only after a while did I noticed that when I try to look at the property of any documents, I got the following error message: Unable to find the default display form.

I opened SharePoint Designer 2013 to compare the original and migrated library and found that the following forms are all missing.

DispForm.aspx, EditForm.aspx, Upload.aspx.

I looked at the migration report. There were indeed warnings about unable to create ListFormWebpart.

I clicked ont he How to solve this. It took me to a ShareGate page that suggested I should enable custom scripts on my SharePoint online environment. I did that.

Waited for over a week before attempting the next Copy Site Object action. The same thing happened. ShareGate missed the forms.

This is an issue because Not able to migate the library forms meant users cannot edit document properties. Not being able to use the Copy Site Objects function seriously limits the usefulness of ShareGate. Does anybody know how I can migrate these library forms? I tried to use the New button to create a new DispForm but I got an error that it cannot save the list changes to the server.