The method changeCreateOrDeleteProperties updates properties provided by a map.
But there is no check if the property / path exist.

I found this issue because this method wanted to modify the path
/modules/shop/templates/components/features/form/shopConfirmTerms/extends" : /modules/form/templates/components/formEdit"
and in my config I have no shop module.

Generally speaking, this script must be reviewed. I set the migration of shop to false, so I expect that there is nothing done on shop. But in this script we process on modules without taking care of the configuration defined.