I will fix bugs in your Next.js or Node.js application

Is your Next.js or Node.js app throwing errors you cannot figure out? I have spent years debugging production applications serving millions of users including OLX Pakistan, CardsIQ and PocketClass. I can fix Next.js rendering and hydration errors, Node.js and Express API errors, authentication and session bugs, database query issues, broken Stripe integrations, deployment errors on Vercel and AWS, and general JavaScript and TypeScript errors. Share your code, describe the bug, and I will find the root cause and fix it properly with a clear explanation of what went wrong.