Not sure how you ended up in this state, but I would guess that somehow this Error was added to the Problems view, subsequently cached, and now no longer relevant, but unable to be removed by the Dali validation (as the Facet isn't there). As a result, this is a good time to use the "Delete" option on the Error message as it is invalid. This is one way you can manually fix the cache for this type of issue. Let me know if this doesn't solve the problem.