How to fix Error: The page component must be a valid React component in React

ReactBEGINNERHIGHUpdated Dec 9, 2025· 183 views

This Next.js error occurs when a page file does not export a valid React component as its default export. Next.js requires every page file to export a function or class component that returns JSX.

Quick fix

Fixes Error: The page component must be a valid React component

// ✅ Correct - function component with default export
export default function MyPage() {
  return <div>Hello World</div>;
}

// ✅ Correct - arrow function with default export
const MyPage = () => {
  return <div>Hello World</div>;
};
export default MyPage;

// ❌ Wrong - named export instead of default
export function MyPage() {
  return <div>Hello World</div>;
}

// ❌ Wrong - no export at all
function MyPage() {
  return <div>Hello World</div>;
}

Verify default export exists
Ensure the component returns JSX
Check that the export is a component, not a plain value
Fix import/export re-exports

react — error

$// ✅ Correct - function component with default export
export default function MyPage() {
  return <div>Hello World</div>;
}
// ✅ Correct - arrow function with default export
const MyPage = () => {
  return <div>Hello World</div>;
};
export default MyPage;
// ❌ Wrong - named export instead of default
export function MyPage() {
  return <div>Hello World</div>;
}
// ❌ Wrong - no export at all
function MyPage() {
  return <div>Hello World</div>;
}
Error: The page component must be a valid React component

What this error means

Next.js validates that each page file exports a valid React component that can be rendered. This error appears when the default export is missing, exports something other than a React component (like a plain object, string, or non-component function), or when the exported function does not return JSX. In the Pages Router (`pages/` directory) and App Router (`app/` directory), Next.js expects page files to follow a specific pattern: they must default export a React component. The component can be a function component or class component, and in the App Router, it can also be an async server component. This validation happens during the build process and at runtime, ensuring that Next.js can properly render your pages and handle routing.

Typical symptoms

Build fails with "The page component must be a valid React component" error
Page displays a blank screen or fails to render
Error appears when navigating to a specific route
Development server shows the error immediately after creating or modifying a page file
TypeScript shows no errors but Next.js build fails

Common causes

Missing default export in the page file
Default export is not a React component (e.g., exporting a plain object, string, or number)
Using named exports instead of default export for the page component
Function component does not return JSX or returns undefined
Accidentally exporting a utility function or constant as default
Importing and re-exporting incorrectly (e.g., export default from another file that is not a component)
Class component missing render() method or not extending React.Component
Async function in Pages Router that is not a valid getServerSideProps/getStaticProps pattern

How to fix "Error: The page component must be a valid React component"

1Verify default export exists

Open the problematic page file and ensure it has a default export:

tsx

// ✅ Correct - function component with default export
export default function MyPage() {
  return <div>Hello World</div>;
}

// ✅ Correct - arrow function with default export
const MyPage = () => {
  return <div>Hello World</div>;
};
export default MyPage;

// ❌ Wrong - named export instead of default
export function MyPage() {
  return <div>Hello World</div>;
}

// ❌ Wrong - no export at all
function MyPage() {
  return <div>Hello World</div>;
}

2Ensure the component returns JSX

Verify that your component function actually returns JSX:

tsx

// ✅ Correct - returns JSX
export default function MyPage() {
  return <div>Content</div>;
}

// ❌ Wrong - no return statement
export default function MyPage() {
  <div>Content</div>;
}

// ❌ Wrong - returns nothing
export default function MyPage() {
  return;
}

// ❌ Wrong - returns non-JSX value
export default function MyPage() {
  return "Hello";
}

3Check that the export is a component, not a plain value

Make sure you are not accidentally exporting a non-component value:

tsx

// ❌ Wrong - exporting a plain object
export default {
  title: "My Page",
  content: "Hello"
};

// ❌ Wrong - exporting a string
export default "MyPage";

// ❌ Wrong - exporting a utility function
export default function fetchData() {
  return fetch("/api/data");
}

// ✅ Correct - exporting a React component
export default function MyPage() {
  return <div>My Page</div>;
}

4Fix import/export re-exports

If you are re-exporting from another file, ensure the imported value is a React component:

tsx

// components/MyComponent.tsx
export const MyComponent = () => <div>Hello</div>;

// ❌ Wrong - re-exporting named export as default (syntax error)
// pages/index.tsx
export { MyComponent as default } from "@/components/MyComponent";

// ✅ Correct - import then export as default
// pages/index.tsx
import { MyComponent } from "@/components/MyComponent";
export default MyComponent;

// ✅ Better - define page component in the page file
// pages/index.tsx
import { MyComponent } from "@/components/MyComponent";
export default function HomePage() {
  return <MyComponent />;
}

5For App Router, ensure proper async server component syntax

In the App Router (app/ directory), page components can be async server components, but they must still return JSX:

tsx

// app/page.tsx
// ✅ Correct - async server component
export default async function Page() {
  const data = await fetch("https://api.example.com/data");
  const result = await data.json();
  
  return <div>{result.title}</div>;
}

// ✅ Correct - async component with params
export default async function Page({ 
  params 
}: { 
  params: Promise<{ slug: string }> 
}) {
  const { slug } = await params;
  return <div>Post: {slug}</div>;
}

// ❌ Wrong - async function that doesn't return JSX
export default async function Page() {
  const data = await fetch("https://api.example.com/data");
  return data; // Not JSX!
}

6Clear Next.js cache and rebuild

Sometimes the error persists due to cached build artifacts. Clear the cache and rebuild:

bash

# Delete .next directory and node_modules/.cache
rm -rf .next
rm -rf node_modules/.cache

# Restart development server
npm run dev

# Or rebuild for production
npm run build

Advanced notes

Pages Router vs App Router differences: In the Pages Router (pages/ directory), you cannot use async function components directly as page components. Async data fetching must be done via getServerSideProps or getStaticProps. In the App Router (app/ directory), async server components are fully supported and encouraged.

TypeScript considerations: If using TypeScript, ensure your component types are correct. A component should have a return type that resolves to JSX.Element, React.ReactElement, or React.ReactNode. However, type errors alone will not cause this Next.js runtime error - the actual runtime export must be invalid.

Dynamic imports: If you are using dynamic imports with next/dynamic, ensure the dynamically imported component is itself valid. The error might appear to come from the page but actually originates from a dynamically loaded component.

Module resolution issues: Verify your import paths are correct and that TypeScript/JavaScript can resolve the modules. A failed import might result in undefined being exported as default, triggering this error.

Class components: If using class components, ensure they extend React.Component or React.PureComponent and have a render() method that returns JSX:

tsx

import React from 'react';

// ✅ Correct
export default class MyPage extends React.Component {
  render() {
    return <div>Hello</div>;
  }
}

// ❌ Wrong - missing render method
export default class MyPage extends React.Component {
  // No render method!
}

Frequently asked questions

What does "Error: The page component must be a valid React component" mean?: js validates that each page file exports a valid React component that can be rendered. This error appears when the default export is missing, exports something other than a React component (like a plain object, string, or non-component function), or when the exported function does not return JSX. js expects page files to follow a specific pattern: they must default export a React component.
How do I fix "Error: The page component must be a valid React component"?: This Next.js error occurs when a page file does not export a valid React component as its default export. Next.js requires every page file to export a function or class component that returns JSX.
What causes "Error: The page component must be a valid React component"?: Missing default export in the page file Default export is not a React component (e.g., exporting a plain object, string, or number) Using named exports instead of default export for the page component
Is the "Error: The page component must be a valid React component" error serious?: Yes. This is a high-severity error that usually blocks work until it is fixed, but the steps above resolve it.

Official resources & further reading

📚React Official Documentation
📖
Next.js official documentation - Page Without Valid React Component(Official Docs)
📝
Omi AI - TypeError: The default export is not a React Component
📖
Next.js App Router - Layouts and Pages(Official Docs)