high severity

How to Fix: Webpack Chunk Loading Error

Users get 'Loading chunk failed' errors after you deploy a new version.

chunk load errorloading chunk failedwebpack errorchunk not found

Symptoms

'ChunkLoadError: Loading chunk X failed'

Page breaks after deploy until hard refresh

Lazy-loaded components fail to load

Common Causes

01

Old HTML referencing old chunk hashes

02

CDN serving stale assets

03

Chunk deleted during deployment

04

Network issues loading chunks

The DevConsole Solution

DevConsole can detect chunk loading errors and help implement graceful recovery strategies.

Step-by-Step Fix

1

Check Asset URLs

Verify chunk URLs match deployed file names.

2

Implement Error Boundary

Catch chunk errors and prompt user to refresh.

3

Configure CDN Cache

Use appropriate cache headers for hashed assets.

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Frequently Asked Questions

How do I prevent this?

Implement a chunk loading error boundary that prompts users to refresh after deploys.

Should I keep old chunks around?

For a short time after deploy, yes. Or use versioned deployment URLs.

Helpful Tools

HTTP Header Analyzer

Free HTTP header analyzer. Analyze and understand HTTP headers.

Related Problems

Module Not Found Error

Your bundler can't find a module you're trying to import, causing build failures.

CSS Styles Not Loading

Your CSS works in development but styles are missing or broken in production.

Stop debugging blindly

DevConsole gives you the visibility and control to fix issues like webpack chunk loading error in seconds, not hours.

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