json-viewer: 'JsonViewer' cannot be used as a JSX component.

$ npx create-react-app  demo  --template redux-typescript
$ cd demo
$ npm install @textea/json-viewer --save
$ vim src/App.tsx      

import JsonViewer from '@textea/json-viewer';

function App() {
  const src = {'aaa': 'bbb'};
  return (
    <div className="App">
        <JsonViewer src={src}  />
    </div>
  );
}

export default App;

$ npm run build

TS2786: 'JsonViewer' cannot be used as a JSX component.
  Its element type 'ReactElement<any, any> | Component<ReactJsonViewProps, any, any> | null' is not a valid JSX element.
    Type 'Component<ReactJsonViewProps, any, any>' is not assignable to type 'Element | ElementClass | null'.
      Type 'Component<ReactJsonViewProps, any, any>' is not assignable to type 'ElementClass'.
        The types returned by 'render()' are incompatible between these types.
          Type 'ReactNode' is not assignable to type 'Element | null'.
            Type 'undefined' is not assignable to type 'Element | null'.
     5 |   return (
     6 |     <div className="App">
  >  7 |         <JsonViewer src={src}  />
       |          ^^^^^^^^^^
     8 |     </div>
     9 |   );
    10 | }