diagnosing-failed-warehouse-syncsby posthog

Work top-down when a data warehouse source or table is failing, stuck, or producing bad data: source → schema → recovery action. Do not jump straight to "resync from scratch" — that discards synced data and restarts from zero, which is rarely the right first step.

npx skills add https://github.com/posthog/skills --skill diagnosing-failed-warehouse-syncs

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