Error 500: Couldn't resolve component 'default' at '/'
Hi, some of my users are experiencing this issue where my site doesn't load correctly (precisely the homepage). I recently moved the site from Vue to Nuxt successfully but now feels like maybe something I pushed live did this (it was a simple text change). It worked fine before and the site works completely fine for me but some users are getting the error. I can't even reproduce it locally.
reading a bit, seems to be an issue with cache. I tried 'purge' on cloudflare pages, adding window.location.reload(true) in the code to try and get a reload but no results. what can i do?
2 Replies
Hi @el.despertar. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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Your issue—users seeing "Couldn't resolve component 'default' at '/'" and a 500 error, especially after a deployment, while you cannot reproduce it locally—is strongly associated with caching problems, particularly when using Cloudflare or similar CDNs.
From the knowledge sources, this is a common scenario after deploying a new version of a Nuxt site:
- The HTML page is updated and references new JS chunks.
- However, due to aggressive caching (often with headers like Cache-Control: public, max-age=31536000, immutable), browsers or Cloudflare may still serve old or missing JS files, leading to errors and blank/white pages for some users.
- Purging the cache on Cloudflare often resolves the issue, but if not done thoroughly or if cache rules are misconfigured, the problem can persist for some users.
Key recommendations from the sources:
1. Purge All Caches Thoroughly: After each deployment, ensure you fully purge the Cloudflare cache, not just partially. This includes both HTML and JS assets. Sometimes, a partial purge or a delay in cache invalidation at edge locations can cause this issue to persist for some users JS caching issue, JS chunks return 404 after every deployment.
2. Review Cache-Control Headers: Avoid using
This is a well-known deployment/caching issue, not a Nuxt bug. The best solution is to ensure a full cache purge on Cloudflare after every deployment and to review your cache headers to avoid long-lived or immutable caching for assets that change between builds. This will prevent users from receiving mismatched or missing files and encountering errors like the one you described. If you continue to see the issue after a full purge, double-check that your deployment process is not serving stale assets from another layer (e.g., another CDN, browser cache, or server-side cache) JS caching issue, JS chunks return 404 after every deployment. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
immutable or very long max-age values for JS chunks unless you can guarantee they will never change or be deleted. If a new deployment removes or renames JS files, but browsers or Cloudflare still cache references to the old ones, users will get errors. Consider removing immutable and using shorter cache durations for JS files, or configure Cloudflare not to cache 404 responses JS chunks return 404 after every deployment.
3. Automate Cache Purge Post-Deploy: As a failsafe, trigger a full cache purge via Cloudflare's API after every deployment. This ensures all users get the latest assets and prevents mismatches between HTML and JS files JS caching issue.
4. Do Not Rely on Client-Side Reloads: Adding window.location.reload(true) is not a reliable fix, as the underlying problem is the mismatch between cached assets and the current deployment.
Summary:This is a well-known deployment/caching issue, not a Nuxt bug. The best solution is to ensure a full cache purge on Cloudflare after every deployment and to review your cache headers to avoid long-lived or immutable caching for assets that change between builds. This will prevent users from receiving mismatched or missing files and encountering errors like the one you described. If you continue to see the issue after a full purge, double-check that your deployment process is not serving stale assets from another layer (e.g., another CDN, browser cache, or server-side cache) JS caching issue, JS chunks return 404 after every deployment. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
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