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.

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. Basel Issmail Basel Issmail ’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems. My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale. In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals. I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software. Daniel Vázquez Daniel Vázquez Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Bastien Labelle Bastien Labelle Full stack dev w/ 20+ years of experience 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: 💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web. 🖋️ 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. 🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development. 🌟 Open source contributions on Github & StackOverflow for Flutter & Dart 🎖️ 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. Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services Stanislav Prigodich Stanislav Prigodich 15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it. Costea Adrian Costea Adrian Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system. zipking 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.

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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

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