ERR_BUNDLE_ACTIVATE_MISSING_CONNECTION: Connection is missing

The project you are trying to import/activate has a dependency on connection(s) that either do not exist or have been remapped to connection(s) that do not exist on the DSS instance.

Remediation

Use the connection remapping option, and map the missing connection(s) to ones that exist on the DSS instance. The connection remapping is available for both project import (tick the Display advanced options after upload) and bundle activation (in the Activation settings tab of the bundles management screen).