expected a string (for built-in components) or a class/function (for composite components) but got: undefined on Navbar

[daxnet]

Prerequisites

• I am using the correct version of React-Bootstrap for my version of Bootstrap
• I have searched for duplicate or closed issues
• I have read the contributing guidelines

Describe the bug

Just copied the example from documentation but still get the following error:

Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Nodejs: 18.18.0
Create new React project with Nextjs:

npx create-next-app@latest

Install react bootstrap:

npm install react-bootstrap bootstrap

Then, in the page.tsx file, paste the following:

import Container from 'react-bootstrap/Container';
import Nav from 'react-bootstrap/Nav';
import Navbar from 'react-bootstrap/Navbar';
import NavDropdown from 'react-bootstrap/NavDropdown';

export default function Home() {
  return (
    <Navbar expand="lg" className="bg-body-tertiary">
      <Container>
        <Navbar.Brand href="#home">React-Bootstrap</Navbar.Brand>
        <Navbar.Toggle aria-controls="basic-navbar-nav" />
        <Navbar.Collapse id="basic-navbar-nav">
          <Nav className="me-auto">
            <Nav.Link href="#home">Home</Nav.Link>
            <Nav.Link href="#link">Link</Nav.Link>
            <NavDropdown title="Dropdown" id="basic-nav-dropdown">
              <NavDropdown.Item href="#action/3.1">Action</NavDropdown.Item>
              <NavDropdown.Item href="#action/3.2">
                Another action
              </NavDropdown.Item>
              <NavDropdown.Item href="#action/3.3">Something</NavDropdown.Item>
              <NavDropdown.Divider />
              <NavDropdown.Item href="#action/3.4">
                Separated link
              </NavDropdown.Item>
            </NavDropdown>
          </Nav>
        </Navbar.Collapse>
      </Container>
    </Navbar>
  );
}

Run the app:

npm run dev

Then navigate to http://localhost:3000

Error:

Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:11.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:12.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:15.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:16.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:18.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:19.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:22.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:23.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:24.
Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check your code at page.tsx:13.
 ⨯ Error: Unsupported Server Component type: undefined
    at stringify (<anonymous>)
 ⨯ Error: Unsupported Server Component type: undefined
    at stringify (<anonymous>)
 ⨯ Error: Unsupported Server Component type: undefined
    at stringify (<anonymous>)
 ⨯ Error: Unsupported Server Component type: undefined
    at stringify (<anonymous>)
digest: "966019666"

Note that other components like Button, Badge, etc. workes just fine.

Expected behavior

Navbar should work normally without any error.

To Reproduce

No response

Reproducible Example

no

Screenshots

No response

What operating system(s) are you seeing the problem on?

No response

What browser(s) are you seeing the problem on?

No response

What version of React-Bootstrap are you using?

2.9.0

What version of Bootstrap are you using?

5.3.2

Additional context

No response

[shashi2290]

@daxnet
instead of export default use like this

const App = () => {
return (Component)
}

export default App

[shashi2290]

import Container from 'react-bootstrap/Container';
import Nav from 'react-bootstrap/Nav';
import Navbar from 'react-bootstrap/Navbar';
import NavDropdown from 'react-bootstrap/NavDropdown';

function Home() {
return (


<Navbar.Brand href="#home">React-Bootstrap</Navbar.Brand>
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">

<Nav.Link href="#home">Home</Nav.Link>
<Nav.Link href="#link">Link</Nav.Link>

<NavDropdown.Item href="#action/3.1">Action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.2">
Another action
</NavDropdown.Item>
<NavDropdown.Item href="#action/3.3">Something</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="#action/3.4">
Separated link
</NavDropdown.Item>


</Navbar.Collapse>


);
}
export default Home

[kyletsang]

Dupe of #6669