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.
rayush33
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hanson1014
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Day job: I'm the sole backend developer at merketing company where I own and maintain 11 PHP/Symfony microservices on AWS (ECS Fargate, RDS, S3, CloudFront), handle the full CI/CD pipeline (Bitbucket Pipelines, Docker), and manage monitoring with Sentry and CloudWatch. These services handle high request volumes in production every month.
What I bring to AI-built apps:
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- I set up the infrastructure AI tools don't touch: AWS hosting, CI/CD pipelines, automated deployments, database optimization, monitoring, and alerting
- I integrate external services: payment providers, email systems, partner APIs, SSO/auth
Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
Based in Poland (CET timezone). Available for async work and calls during EU/US business hours.
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Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
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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.