Common Issues general

My App Loads but Shows a Blank White Screen

You open your app or website and instead of seeing your content, you get nothing. Just a plain white screen. The page seems to load (the tab title might even show your app name), but the screen stays completely empty.

This is sometimes called the "white screen of death" and it's one of the most common problems with web apps. The frustrating part is that there's no obvious error message — just nothing. Your users see the same blank page and probably think your site is broken or doesn't exist.

The good news is that this usually has a specific, fixable cause. The bad news is that figuring out which one requires looking at things most non-technical people don't know how to check.

Error Messages You Might See

Blank/empty page Uncaught TypeError Failed to fetch ChunkLoadError net::ERR_BLOCKED_BY_CLIENT
Blank/empty pageUncaught TypeErrorFailed to fetchChunkLoadErrornet::ERR_BLOCKED_BY_CLIENT

Common Causes

  • JavaScript error blocking the page — Your app needs JavaScript to display content, and a single error can stop everything from showing up
  • Missing environment variables — Your app is looking for configuration values (like database addresses) that don't exist in production
  • Wrong build settings — The app was built with incorrect settings so the files it needs can't be found
  • API or database is down — Your app tries to load data before showing anything, and the data source isn't responding
  • Blank index.html — The main page file is empty or was overwritten during deployment
  • Browser blocking resources — Ad blockers, security extensions, or corporate firewalls are blocking files your app needs

How to Fix It

  1. Open the browser console — Press F12 (or right-click and choose "Inspect"), then click the "Console" tab to see error messages in red
  2. Try an incognito/private window — This rules out browser extensions and cached files as the cause
  3. Check if your backend is running — If your app loads data from a server, make sure that server is online and responding
  4. Look at the page source — Right-click the white page and choose "View Page Source" to see if there's any content at all
  5. Check deployment logs — Go to your hosting platform and look for error messages from the most recent deployment

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 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. Franck Plazanet Franck Plazanet I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth. Core Expertise: 🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement. 🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure. ☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs. 📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue. I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity. Matthew Jordan Matthew Jordan I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job. hanson1014 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. 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. Taufan Taufan I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms. Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact. 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. Jared Hasson Jared Hasson 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 Pratik Pratik SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure

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Frequently Asked Questions

Why is there no error message on the screen?

Modern web apps use JavaScript to build the entire page. If JavaScript fails, there's nothing to show the error to you on the page itself. The errors are hidden in the browser's developer console (press F12 to open it).

It works on my phone but not my computer (or vice versa). Why?

Different browsers and devices handle things differently. It could be a browser extension blocking something, an outdated browser that doesn't support your app's code, or a cached version on one device.

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