Cursor deployment

Environment Variables Not Loading in Production

Environment variables are not being loaded correctly in production after Cursor reorganized your configuration management code. The application uses hardcoded values or incorrect env var names.

What worked in development now fails in deployed environments.

Error Messages You Might See

Cannot read property of undefined Invalid configuration Database connection failed API key is undefined
Cannot read property of undefinedInvalid configurationDatabase connection failedAPI key is undefined

Common Causes

  1. process.env.VAR_NAME with incorrect variable name (capitalization, underscores)
  2. Env variables loaded too late, after being used by initial code
  3. .env file referenced in code instead of using process.env
  4. Env loading library (dotenv) no longer called before main app code
  5. Variable names changed but deployment config not updated

How to Fix It

Load env early: require('dotenv').config() as first line. Use process.env.VAR_NAME not require('.env'). Add console.log for debugging but never commit sensitive values. Verify deployment has env vars set.

Real developers can help you.

rayush33 rayush33 JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems Milan Surelia Milan Surelia Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems. Expertise: πŸ’‘ Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web. πŸ–‹οΈ Sharing insights through technical writing, blogging, and open-source contributions. 🀝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences. Notable Achievements: 🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX. πŸš€ Launched Compose101 β€” a Jetpack Compose starter kit to speed up Android development. 🌟 Open source contributions on Github & StackOverflow for Flutter & Dart πŸŽ–οΈ Worked on improving app performance and user experience with smart solutions. Milan is always happy to connect, work on new ideas, and explore the latest in technology. Victor Denisov Victor Denisov Developer Tejas Chokhawala Tejas Chokhawala Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript. Focused on performance, clean architecture and shipping fast. Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Simon A. Simon A. I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows. Rudra Bhikadiya 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. Yovel Cohen Yovel Cohen I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well. Sage Fulcher Sage Fulcher Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them) Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions.

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Frequently Asked Questions

How do I manage secrets?

Never commit secrets. Use deployment platform's secrets manager (Heroku config vars, AWS Secrets Manager) and reference with process.env.

How do I validate env vars?

On startup, check all required vars exist. Use schema validation library or simple if statements.

Related Cursor Issues

Can't fix it yourself?
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