I’m on 8.1.5
I got error while I trying to import a project with designer and exportation created by the gateway.
I also try to do the importation with the gateway and allow overwrtite and got error too.
Two possibilities to check first:
Does the target gateway have the same modules installed as the origin gateway?
Does the project inherit from another project on the origin gateway that is not present on the target gateway?
Booth gateway have same modules and project installed.