Your app works locally… but

Your app works locally… but crashes after deployment? 😩

One of the most common mistakes I see is forgetting that local and production environments are different.

Before deploying, always check:

✅ Environment variables are correctly configured ✅ Production database credentials are set ✅ API URLs point to the right environment ✅ CORS settings allow your frontend ✅ Build errors are resolved ✅ Authentication works in production

My rule: Never assume that because it works on localhost, it's ready for production.

What’s the most frustrating deployment error you've faced? 👇