Use of Dropdown button in React

I want to use the react Dropdownbutton to build a list, but i receive the following error :

TypeError: react_dropdown__WEBPACK_IMPORTED_MODULE_6__.Dropdown is undefined

Here is my code :

render() {
return (
  <div className="Upload">
    {this.renderNotes()}
    <Dropdown>
      <Dropdown.Toggle variant="success" id="dropdown-basic">
        Dropdown Button
      </Dropdown.Toggle>

      <Dropdown.Menu>
        <Dropdown.Item href="#/action-1">Action</Dropdown.Item>
        <Dropdown.Item href="#/action-2">Another action</Dropdown.Item>
        <Dropdown.Item href="#/action-3">Something else</Dropdown.Item>
      </Dropdown.Menu>
    </Dropdown>
  </div>

);

And the import :

import { Dropdown } from "react-dropdown";

I have install it using the command : npm install react-dropdown --save

Does someone have an idea ?