Lovable
deployment
Environment Variables Undefined in Production Build
API keys and configuration values are undefined in production. Supabase URL and API key return undefined, causing all API calls to fail. Works locally with .env.local but not in production.
Vite only exposes variables prefixed with VITE_ to the client. Production requires proper build-time or runtime environment setup.
Error Messages You Might See
Cannot read property of undefined
Supabase URL is undefined
API key is required
Common Causes
- Environment variable doesn't have VITE_ prefix
- .env file not loaded during build
- Using process.env instead of import.meta.env
- Environment variables not set in production deployment platform
- Build cache not cleared after env change
How to Fix It
Use VITE_ prefix for client-side variables in .env:
VITE_SUPABASE_URL=https://xxx.supabase.co
VITE_SUPABASE_KEY=xxxAccess in code:
import.meta.env.VITE_SUPABASE_URLSet same variables in production platform (Vercel, Netlify, Railway env settings).
Real developers can help you.
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
BurnHavoc
Been around fixing other peoples code for 20 years.
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I expose env variables to browser?
Use VITE_ prefix in .env file. Access with import.meta.env.VITE_VARIABLE_NAME
How do I set env in production?
Use deployment platform's environment variable settings (Vercel, Netlify dashboards) or set in hosting environment.