Projection does not exist or is inaccessible

I have a 5.0.2.0 instance of ES running and we are getting the error “Projection does not exist or is inaccessible” in the web UI. We get this particular error when attempting to edit projections and are blocked from all other projection actions. It doesn’t matter if it’s a system projection or one we’ve created. The system in question has had the database restored from another server running the same version. I’ve not been able to find much information about how to go about resolving this.