Structured FM Console

Working with a test document set that behaves correctly outside FM, I've run Update references on the Structure View. The console now mentions four DITA+FM errors (topicref with empty href attribute).

Not a problem in itself, as I can guess what's happening … but as an aid to resolving problems that's not much beyond SharePoint's "Something has gone wrong"! How do I find my way from the console message to the topicref that's throwing the problem?