Why am I seeing the error, "The connection '<name of your connection>' on the selected Hub is not compatible with this project, when we try to deploy by clicking Deploy Snapshot?

Environment:

Intelligent Advisor

Resolution:  

You will see this error if you have made changes to the Metadata (for example, by adding or changing a Custom Field or Custom Object). To resolve this issue, you need to refresh the data model by refreshing your Mapping Settings.

See the following link for more information: Refresh the data model