# Fix shadcn/ui hydration errors > A shadcn hydration error usually comes from dark mode, the Sidebar skeleton, dates in the Calendar, or a Button nested in a trigger. The fix for each one. Source: https://hydration.jscrate.dev/docs/guides/shadcn-hydration-error Last updated: 2026-09-18 A shadcn hydration error is rarely a bug in shadcn/ui itself. The components are copied into your project, and the mismatches come from how they meet the server: a theme class set before hydration, a random skeleton width, dates formatted in another timezone, or a ` */} Save the draft ); } ``` For a link that looks like a button, shadcn's Radix-based Button documents `