Failed to connect to bus: No medium found during updates

If I update a template from the [Dom0] Qube Manager by right clicking the template and selecting Update. I see “Failed to connect to bus: No medium found” after the Running scriptlet section, and before the Verifying section. The update continues, and shows as Complete! with all packages installed or upgraded. I don’t know if this is something I need to investigate or not. Everything seems to be working after the update. If I do need to look into it, where would I look?