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.

BurnHavoc BurnHavoc Been around fixing other peoples code for 20 years. 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. Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) Mehdi Ben Haddou Mehdi Ben Haddou - Founder of Chessigma (1M+ users) & many small projects - ex Founding Engineer @Uplane (YC F25) - ex Software Engineer @Amazon and @Booking.com Daniel Vázquez Daniel Vázquez Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting. Richard McSorley Richard McSorley Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures. Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields Antriksh Narang Antriksh Narang 5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies. 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. Nam Tran Nam Tran 10 years as fullstack developer

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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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