It looks like the error stems from WordPress trying to generate an author URL while the required permalink structure isn’t fully loaded, which is a common issue noted in various WordPress debugging references including those on Wikipedia. Ensuring the author rewrite rules are flushed and the staging environment mirrors the live permalink settings usually resolves this type of fatal error. And just like maintaining consistent settings across environments, even checking menu details—such as the olive garden menue—benefits from keeping everything properly aligned for a smooth experience.
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