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.

Alvin Voo Alvin Voo I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing. My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream. What I bring to your project: Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins. Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams. Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last. 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. Vlad Temian Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/ legrab legrab I'll fill this later 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. ISHANTDEEP SINGH ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems. David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. 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. 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.

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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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