Nuxt•3w ago

500 error in production

My site runs fine in local dev, but throws a 500 error in production. [request error] [unhandled] [GET] http://localhost:3000/__nuxt_error?error=true&url=%2F&statusCode=500&statusMessage=Server+Error&message=Server+Error TypeError: Cannot read properties of undefined (reading 'split') at isMetaArrayDupeKey (file:///[...]/.output/server/node_modules/unhead/dist/shared/unhead.BaPU1zLf.mjs:5:15)

6 Replies

kapa.ai•3w ago

Hi @CROSS. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- I can see you're encountering a 500 server error in your Nuxt application when running in production, while it works fine in development. This is a common issue that can happen for various reasons. Based on the error message, it appears to be related to the unhead package, which handles meta tags in Nuxt. The error suggests there's an issue with a property being undefined when the code tries to call the split() method on it. There are several potential causes for this type of error: 1. Version mismatches: This could be related to mismatching versions of dependencies like ohash as mentioned in this GitHub issue. The issue can cause hydration failures and server errors in production builds while working fine in development. 2. Meta tag handling: Since the error is coming from the unhead package and specifically mentions isMetaArrayDupeKey, it might be related to how you're defining meta tags in your application. 3. Server-side rendering issues: The error might be occurring during server-side rendering when certain browser APIs aren't available. Here are some potential solutions: 1. Check for dependency version conflicts: As mentioned in the GitHub issue, you could try adding an override for the ohash package in your package.json:

   "overrides": {
       "ohash": "2.0.11"
   }

   "overrides": {
       "ohash": "2.0.11"
   }

Then run a fresh install: rm -rf node_modules package-lock.json && npm install 2. Add error handling: Create or update your error.vue file to handle these errors more gracefully as described in the Error Handling documentation. 3. Check your meta tags: Review any useHead or similar meta tag definitions in your code to ensure they're properly formatted and don't contain undefined values. 4. Add a Nitro plugin for better error logging: You can add a server plugin to get better error logs:

   // server/plugins/error-handler.js
   export default defineNitroPlugin((nitroApp) => {
     // Get better stack traces in production
     nitroApp.hooks.hook('error', async (error, { event }) => {
       console.error(`${event?.path} Application error:`, error)
     })
   })

   // server/plugins/error-handler.js
   export default defineNitroPlugin((nitroApp) => {
     // Get better stack traces in production
     nitroApp.hooks.hook('error', async (error, { event }) => {
       console.error(`${event?.path} Application error:`, error)
     })
   })

5. Check for browser APIs used during SSR: Make sure you're not using browser-only APIs like document or window outside of onMounted hooks or without proper checks. If you continue to face issues, consider creating a minimal reproduction of the problem to help identify the exact cause. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•3w ago

<@198169754215645185> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

DavidOP•3w ago

@kapa.ai none of that works

kapa.ai•3w ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I understand that the solutions I suggested didn't resolve your issue. Based on the error you shared previously related to unhead and the knowledge sources, there might be a more specific issue at play. Looking at the knowledge sources, there was a significant change in Nuxt 3.16.0 with the upgrade to Unhead v2, which has caused several compatibility issues for users: 1. The error you're seeing might be related to the removal of the getActiveHead export from the unhead module, as mentioned in this GitHub issue. 2. Several users reported similar 500 errors after upgrading to Nuxt 3.16.0, particularly with certain modules like @nuxtjs/i18n. Here are more targeted solutions based on the knowledge sources: 1. Check if you're using i18n: If you're using @nuxtjs/i18n, make sure to upgrade it to version 9.3.0 or later, which specifically addresses compatibility with Unhead v2. 2. Enable legacy mode for unhead: You can try enabling the legacy compatibility mode in your nuxt.config.ts:

   export default defineNuxtConfig({
     unhead: {
       legacy: true
     }
   })

   export default defineNuxtConfig({
     unhead: {
       legacy: true
     }
   })

3. Check for direct imports from unhead: Make sure you're not importing directly from @unhead/vue. Instead, use imports from #imports or nuxt/app.

   // Change this:
   import { useHead } from '@unhead/vue'
   // To this:
   import { useHead } from '#imports'

   // Change this:
   import { useHead } from '@unhead/vue'
   // To this:
   import { useHead } from '#imports'

4. Check other modules: Other modules like nuxt-og-image might also be affected. Make sure all your Nuxt modules are updated to versions compatible with Nuxt 3.16.0. If you're still experiencing issues, it might help to share more details about your Nuxt version, the modules you're using, and any specific head-related code in your application. Let me know if any of these more targeted solutions help with your specific error. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•3w ago

<@198169754215645185> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

DavidOP•3w ago

Closing. Switched to NextJS. I tried everything, sorry.

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500 error in production

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