Tag: Production Debugging

Seeing hydration mismatch warnings in your Astro 5 islands? Here is why SSR and client markup drift apart, and the fixes that actually work in production.

Only seeing ERR_UPLOAD_FILE_CHANGED in production but not on localhost? This guide explains the exact root cause — FormData lifecycle and file reference expiry — with a step-by-step fix to stop this Next.js file upload bug for good.