N
Nuxt•2w ago
Yassaaa

I just need help from the nuxt ai

I am getting this error in browser console after settingup nuxt project: runtime-core.esm-bundler.js:7013 <Suspense> is an experimental feature and its API will likely change. hook.js:608 [Vue warn]: Hydration node mismatch: - rendered on server: <!--[--> (start of fragment) - expected on client: html at <App key=4 > at <NuxtRoot> overrideMethod @ hook.js:608 hook.js:608 Hydration completed but contains mismatches. overrideMethod @ hook.js:608 devtools.client.js:49 ✨ Nuxt DevTools Press Shift + Alt + D to open DevTools
9 Replies
kapa.ai
kapa.ai•2w ago
Hi @Yassaaa. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- I can help you with this hydration mismatch error in your Nuxt project. This is a common issue that occurs when the HTML rendered on the server doesn't match what the client expects during hydration. Based on the error messages you're seeing, you're experiencing a hydration mismatch where the server is rendering a fragment but the client is expecting an HTML element. This typically happens when there's a difference between what's rendered on the server versus the client. Possible Causes and Solutions From the knowledge sources, there are several common causes for hydration mismatches in Nuxt: 1. Using useFetch without a key: Recent issues in Nuxt 3.16 show that useFetch can cause hydration issues if not properly keyed. Try adding a manual key to your useFetch calls: 
const { data } = await useFetch('/api/your-endpoint', {
  key: 'define-custom-key',
})
const { data } = await useFetch('/api/your-endpoint', {
  key: 'define-custom-key',
})
2. Data modification between server and client: If you're modifying data (like using array methods such as shift()) after fetching it on the server but before hydration completes, this can cause mismatches. Make a local copy of the data instead of modifying the original: 
// Instead of this (causes hydration mismatch)
const data = props.data;
data.shift();

// Do this (prevents hydration mismatch)
const data = [...props.data];
data.shift();
// Instead of this (causes hydration mismatch)
const data = props.data;
data.shift();

// Do this (prevents hydration mismatch)
const data = [...props.data];
data.shift();
3. Client-side redirects in middleware: If you have middleware that redirects only on the client side, this can cause hydration issues as mentioned here. 4. Browser-specific issues: Some hydration issues are browser-specific, particularly in Firefox which caches form element states differently as noted in this issue. Specific Recommendations 1. Check if you're using useFetch without a key and add one if needed 2. Look for any data modifications happening between server and client rendering 3. Try using useAsyncData instead of useFetch if you're having persistent issues 4. Examine your components for any state that might differ between server and client The <Suspense> warning is normal and just indicates you're using an experimental Vue feature, which is used by Nuxt internally. If these solutions don't resolve your issue, you might want to try disabling SSR for specific routes using the routeRules configuration in your nuxt.config.ts: 
export default defineNuxtConfig({
  routeRules: {
    '/problematic-route': {
      ssr: false
    }
  }
})
export default defineNuxtConfig({
  routeRules: {
    '/problematic-route': {
      ssr: false
    }
  }
})
This will make the specific route client-side rendered only, which can help bypass hydration issues while you troubleshoot the root cause. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2w ago
<@125244165704384512> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
Yassaaa
YassaaaOP•2w ago
@kapa.ai am I maybe getting that error because of my router.options.ts? 
import type { RouterOptions } from '@nuxt/schema'

export default {
    scrollBehavior(to, _from, savedPosition)
    {
        return new Promise((resolve, _reject) =>
        {
            setTimeout(() =>
            {
                if (savedPosition != null)
                {
                    resolve(savedPosition)
                }
                else
                {
                    if (to.hash)
                    {
                        resolve({
                            el: to.hash,
                            top: 0
                        })
                    }
                    else
                    {
                        resolve({ top: 0 })
                    }
                }
            }, 100)
        })
    }
} satisfies RouterOptions
import type { RouterOptions } from '@nuxt/schema'

export default {
    scrollBehavior(to, _from, savedPosition)
    {
        return new Promise((resolve, _reject) =>
        {
            setTimeout(() =>
            {
                if (savedPosition != null)
                {
                    resolve(savedPosition)
                }
                else
                {
                    if (to.hash)
                    {
                        resolve({
                            el: to.hash,
                            top: 0
                        })
                    }
                    else
                    {
                        resolve({ top: 0 })
                    }
                }
            }, 100)
        })
    }
} satisfies RouterOptions
kapa.ai
kapa.ai•2w ago
Let me check the knowledge base for you again. One moment! :books: ---------------------- Based on the code you've shared, your custom scrollBehavior implementation in router.options.ts could potentially be contributing to the hydration mismatch error, but it's not likely to be the primary cause. Looking at your implementation, I notice a few things: 1. You're using a setTimeout with a delay of 100ms to handle scroll behavior 2. You're returning a Promise that resolves after this timeout 3. You're handling hash navigation and saved positions This approach is similar to some fixes that have been implemented in Nuxt's own codebase to address scroll behavior issues. In fact, several pull requests (PR #24960, PR #25817) have used setTimeout to fix scroll-related issues, particularly with smooth scrolling and page transitions. However, the hydration mismatch error you're seeing (where the server renders a fragment but the client expects HTML) is more likely related to: 1. Data modification between server and client rendering 2. Issues with useFetch or useAsyncData calls 3. Middleware redirects that happen only on the client side Your scrollBehavior function runs after hydration is complete, so it's unlikely to be the direct cause of the hydration mismatch. That said, if you're using page transitions or layout transitions along with this custom scroll behavior, there could be some interaction causing issues. If you want to try a simpler approach to rule out scroll behavior as the cause, you could temporarily replace your implementation with the default one: 
import type { RouterOptions } from '@nuxt/schema'
export default {
  scrollBehavior(to, from, savedPosition) {
    if (savedPosition) {
      return savedPosition
    }
    if (to.hash) {
      return {
        el: to.hash,
        top: 0
      }
    }
    return { top: 0 }
  }
} satisfies RouterOptions
import type { RouterOptions } from '@nuxt/schema'
export default {
  scrollBehavior(to, from, savedPosition) {
    if (savedPosition) {
      return savedPosition
    }
    if (to.hash) {
      return {
        el: to.hash,
        top: 0
      }
    }
    return { top: 0 }
  }
} satisfies RouterOptions
If the hydration error persists, then your scroll behavior implementation is likely not the cause. In that case, I'd recommend looking at the other potential causes I mentioned in my previous response. For more information on router options and scroll behavior in Nuxt, you can check the Nuxt documentation on custom routing. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2w ago
<@125244165704384512> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
Yassaaa
YassaaaOP•2w ago
@kapa.ai that was not it... take a look at my nuxt.config.ts: 
import tailwindcss from '@tailwindcss/vite'
import { defineNuxtConfig } from 'nuxt/config'

export default defineNuxtConfig({
    modules: [
        'nuxt-svgo',
        '@nuxt/eslint',
        '@vueuse/nuxt',
        '@nuxt/image',
        '@nuxt/icon',
        '@pinia/nuxt',
        'pinia-plugin-persistedstate'
    ],

    devtools: {
        enabled: true
    },

    app: {
        head: {
            title: 'Nuxt + TailwindV4 Template',
            charset: 'utf-8',
            viewport: 'width=device-width, initial-scale=1',
            meta: [
                { name: 'format-detection', content: 'no' }
            ]
        },
        pageTransition: {
            name: 'page',
            mode: 'out-in'
        },
        layoutTransition: {
            name: 'layout',
            mode: 'out-in'
        }
    },

    css: [
        '@/assets/css/main.css'
    ],

    router: {
        options: {
            scrollBehaviorType: 'smooth'
        }
    },

    future: {
        compatibilityVersion: 4
    },

    experimental: {
        typedPages: true
    },

    compatibilityDate: '2025-03-01',

    vite: {
        plugins: [
            tailwindcss()
        ]
    },

    eslint: {
        checker: true,
        config: {
            stylistic: true
        }
    },

    svgo: {
        autoImportPath: '@/assets/'
    }
})
import tailwindcss from '@tailwindcss/vite'
import { defineNuxtConfig } from 'nuxt/config'

export default defineNuxtConfig({
    modules: [
        'nuxt-svgo',
        '@nuxt/eslint',
        '@vueuse/nuxt',
        '@nuxt/image',
        '@nuxt/icon',
        '@pinia/nuxt',
        'pinia-plugin-persistedstate'
    ],

    devtools: {
        enabled: true
    },

    app: {
        head: {
            title: 'Nuxt + TailwindV4 Template',
            charset: 'utf-8',
            viewport: 'width=device-width, initial-scale=1',
            meta: [
                { name: 'format-detection', content: 'no' }
            ]
        },
        pageTransition: {
            name: 'page',
            mode: 'out-in'
        },
        layoutTransition: {
            name: 'layout',
            mode: 'out-in'
        }
    },

    css: [
        '@/assets/css/main.css'
    ],

    router: {
        options: {
            scrollBehaviorType: 'smooth'
        }
    },

    future: {
        compatibilityVersion: 4
    },

    experimental: {
        typedPages: true
    },

    compatibilityDate: '2025-03-01',

    vite: {
        plugins: [
            tailwindcss()
        ]
    },

    eslint: {
        checker: true,
        config: {
            stylistic: true
        }
    },

    svgo: {
        autoImportPath: '@/assets/'
    }
})
kapa.ai
kapa.ai•2w ago
Let me check the knowledge base for you again. One moment! :books: ---------------------- Looking at your nuxt.config.ts file, I can see a few potential causes for the hydration mismatch error you're experiencing. The most likely culprit is your page and layout transitions configuration: 
app: {
    // ...
    pageTransition: {
        name: 'page',
        mode: 'out-in'
    },
    layoutTransition: {
        name: 'layout',
        mode: 'out-in'
    }
}
app: {
    // ...
    pageTransition: {
        name: 'page',
        mode: 'out-in'
    },
    layoutTransition: {
        name: 'layout',
        mode: 'out-in'
    }
}
These transitions, especially with the out-in mode, can sometimes cause hydration mismatches because they affect how and when components are mounted and unmounted. The out-in mode means the current element is removed before the new one is added, which can create timing issues during hydration. Another potential issue is related to your experimental features: 
experimental: {
    typedPages: true
},
experimental: {
    typedPages: true
},
And your future compatibility settings: 
future: {
    compatibilityVersion: 4
},
compatibilityDate: '2025-03-01',
future: {
    compatibilityVersion: 4
},
compatibilityDate: '2025-03-01',
Setting a future compatibility date and version can enable features that might not be fully stable yet, potentially leading to hydration issues. Based on the knowledge sources, here are some suggestions to fix the hydration mismatch: 1. Try disabling transitions temporarily: Remove or comment out the pageTransition and layoutTransition settings to see if that resolves the issue. 2. Check experimental features: The headNext experimental feature (enabled by default in newer Nuxt versions) uses hash hydration which can sometimes cause issues. You could try explicitly disabling it: 
experimental: {
    typedPages: true,
    headNext: false
}
experimental: {
    typedPages: true,
    headNext: false
}
3. Use a more conservative compatibility date: Instead of a future date, try using the current date or a recent stable release date. 4. Consider lazy hydration: Nuxt 3 has an experimental feature for lazy hydration that can help with hydration issues: 
experimental: {
    lazyHydration: true
}
experimental: {
    lazyHydration: true
}
If you're using useFetch in your components, try switching to useAsyncData as mentioned in this GitHub issue, as there appears to be a bug with useFetch in some recent Nuxt versions. If none of these solutions work, you might want to try disabling SSR for specific routes that are causing problems using routeRules as I mentioned in my previous response. Let me know if any of these suggestions help resolve your hydration mismatch issue! ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2w ago
<@125244165704384512> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
dwol
dwol•2w ago
FYI You can use the nuxt AI on the nuxt website instead of using it here. 1. Go the Nuxt Site 2. Click the search icon in the top right 3. Select 'Ask AI' from the menu
Nuxt
Installation · Get Started with Nuxt
Get started with Nuxt quickly with our online starters or start locally with your terminal.

Did you find this page helpful?