This error occurs when attempting to use Suspense boundaries in React Server Components without proper framework support or configuration. React Server Components require streaming SSR capabilities to work with Suspense, and this feature must be enabled in your build configuration.
React Server Components (RSC) are a new component type that renders on the server before bundling, separate from traditional SSR. When you use Suspense boundaries within Server Components, React needs special streaming infrastructure to handle async rendering and progressive hydration. This error indicates that your application is attempting to use Suspense in a Server Component context, but the necessary React Server Components architecture is not properly configured or enabled. Unlike traditional SSR where the entire page renders before sending HTML, Server Components with Suspense can stream HTML as components resolve, but this requires explicit framework support and configuration.
React Server Components with Suspense are fully supported in Next.js 13 and above when using the App Router. Check your Next.js version in package.json and ensure it's at least 13.0.0. The App Router is enabled by default in Next.js 13+.
# Check your Next.js version
npm list next
# Upgrade to Next.js 14 or 15 if needed
npm install next@latest react@latest react-dom@latestEnsure your components are in the app/ directory, not pages/. The app/ directory uses Server Components by default.
React Server Components and streaming Suspense require React 18+. Check your package.json for React version and upgrade if necessary.
{
"dependencies": {
"react": "^18.2.0",
"react-dom": "^18.2.0"
}
}# Install React 18+
npm install react@latest react-dom@latestIn Next.js App Router, Server Components can use Suspense for streaming. Make sure your component is in the app/ directory and uses async functions for data fetching.
// app/page.tsx (Server Component)
import { Suspense } from 'react';
import LoadingSkeleton from './loading-skeleton';
async function DataComponent() {
// This await works in Server Components
const data = await fetch('https://api.example.com/data').then(r => r.json());
return <div>{data.title}</div>;
}
export default function Page() {
return (
<Suspense fallback={<LoadingSkeleton />}>
<DataComponent />
</Suspense>
);
}Note: The component must be async and use await for Suspense to work properly.
Next.js 13+ enables streaming by default with the App Router, but verify your next.config.js doesn't have conflicting settings. Remove any legacy SSR configurations.
// next.config.js
module.exports = {
// Ensure you're not disabling streaming or experimental features
experimental: {
// These are enabled by default in Next.js 13+ but can be explicit
serverActions: true,
},
};Avoid using reactStrictMode: false or other settings that might disable React 18 features.
If you must stay on Pages Router, you cannot use Suspense with Server Components because Pages Router uses traditional SSR, not React Server Components. Instead, use client-side Suspense:
// pages/index.tsx
import dynamic from 'next/dynamic';
import { Suspense } from 'react';
const ClientComponent = dynamic(() => import('../components/ClientComponent'), {
ssr: false,
loading: () => <div>Loading...</div>,
});
export default function Page() {
return <ClientComponent />;
}Alternatively, migrate to the App Router to use full Server Components with Suspense.
Next.js App Router provides automatic Suspense boundaries using loading.tsx files. This is the recommended approach for route-level loading states.
// app/dashboard/loading.tsx
export default function Loading() {
return <div>Loading dashboard...</div>;
}
// app/dashboard/page.tsx
async function Dashboard() {
const data = await fetchDashboardData();
return <div>{data.content}</div>;
}
export default Dashboard;Next.js automatically wraps your page in a Suspense boundary with the loading component as fallback.
Suspense behavior can differ between development and production. Test both builds to ensure streaming works correctly.
# Build and test production
npm run build
npm run start
# Open browser and check Network tab for streaming responses
# You should see Transfer-Encoding: chunked headersVerify that your hosting platform supports streaming SSR (Vercel, Netlify, Node.js servers all support it).
React Server Components fundamentally change how Suspense works compared to traditional client-side Suspense. In Server Components, Suspense enables streaming HTML to the browser in chunks as async operations complete, rather than waiting for the entire page to render. This requires HTTP/1.1 chunked transfer encoding or HTTP/2 streaming capabilities on your server. When using Suspense in Server Components, React serializes the promise state and sends HTML progressively, with "holes" filled in as data arrives. This is different from client-side Suspense, which suspends rendering and shows fallback UI while waiting for async operations. For optimal performance, place Suspense boundaries strategically around slow data-fetching components, allowing fast content to stream immediately while slow content shows loading states. Be aware that not all hosting platforms support streaming SSR - static export or edge runtime deployments may require different approaches. If you need fine-grained control over streaming, consider using React's renderToPipeableStream API directly. For TypeScript users, ensure you have TypeScript 5.1.3+ and @types/react 18.2.8+ to properly type async Server Components.
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