I will fix nextjs website react app errors and deploy to vercel

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Onasanya Joel
fix nextjs website react app errors and deploy to vercel
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fix nextjs website react app errors and deploy to vercel

About this gig

Fix Next.js website errors, React app errors, build issues, deployment failures, and Vercel configuration problems with a focused developer who understands modern web applications.


I specialize in Next.js, React, Vercel deployment, GitHub, TypeScript, Node.js, APIs, Supabase, and Vercel AI SDK. I can troubleshoot failed builds, runtime errors, routing issues, environment variables, dependency conflicts, API problems, and applications that work locally but fail after deployment.


Next.js & React error fixing

Vercel deployment & troubleshooting

Build and runtime error fixes

GitHub Vercel deployment

Environment variable configuration

API & routing issues

TypeScript & dependency errors

Supabase + Next.js issues

Custom domain setup

AI web app & Vercel AI SDK deployment

Netlify & Railway deployment


I work with existing Next.js, React, TypeScript, Node.js, Supabase, and AI-powered applications and focus on getting your project working correctly in production.

Tech: Next.js React Vercel TypeScript JavaScript Node.js GitHub Supabase APIs Vercel AI SDK Netlify Railway


For complex projects involving multiple bugs, APIs, authentication, databases, or AI integrations, contact me

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Security
    • Design
    • Databases

  • Frontend framework

    • Flutter
    • Next.js
    • React.js
    • Tailwind CSS
    • Htmx

  • Backend framework

    • Express.js
    • Laravel
    • NestJS
    • Next.js
    • Node.js

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Claude
    • Firebase Studio
    • Base44
    • Co.dev
    • Cursor
    • Softgen
    • Replit
    • Bubble
    • FlutterFlow
    • Adalo
    • Webflow
    • Glide
    • Thunkable
    • AppGyver
    • Zoho Creator
    • Softr

Get to know Onasanya Joel

Onasanya Joel

VIBE CODING EXPERT BASE44 REPLIT LOVABLE CURSOR EXPERT

4.9(13)
  • FromNigeria
  • Member sinceApr 2026
  • Avg. response time5 hours
  • Last delivery2 weeks

  • Languages

    English, German, French, Spanish
Welcome Is Your Base44 App Broken, Stuck, or Not Doing What You Need? You had a vision. You built something in Base44 or tried to. Now there are bugs you can't fix, features that won't work, integrations that keep failing, or you just need someone to build the whole thing right from the start. That's exactly where I come in.I am a Base44 expert who helps entrepreneurs, startups, and business owners get their apps working perfectly fast. Whether your app is throwing errors, your database is broken,I handle it all so you can stop being stuck and start moving forward.

My Portfolio

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