A broken reference no longer breaks the whole view

When a page referred to something that had been deleted, renamed, or never created — a slide missing from a presentation, an embedded view whose target is gone — the page showed a raw internal error message instead of an explanation. It was always in English, and it exposed wording meant for developers rather than readers.

Such a page now shows a short, translated notice naming the item it could not find, so whoever maintains the content knows exactly what to fix. It is also clearly different from a page that is still loading, so nothing appears broken while it is simply not ready yet. And because a broken reference is a content problem rather than a system fault, it no longer raises an operational alert.