react-date-picker: Error: MonthInput.render() doesn't return something proper

Uncaught Error: MonthInput.render(): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object. at invariant (invariant.js:42) at ReactCompositeComponentWrapper._renderValidatedComponent (ReactCompositeComponent.js:828) at ReactCompositeComponentWrapper.performInitialMount (ReactCompositeComponent.js:361) at ReactCompositeComponentWrapper.mountComponent (ReactCompositeComponent.js:257) at Object.mountComponent (ReactReconciler.js:47) at ReactDOMComponent.mountChildren (ReactMultiChild.js:240) at ReactDOMComponent._createInitialChildren (ReactDOMComponent.js:699) at ReactDOMComponent.mountComponent (ReactDOMComponent.js:524) at Object.mountComponent (ReactReconciler.js:47) at ReactCompositeComponentWrapper.performInitialMount (ReactCompositeComponent.js:370) at ReactCompositeComponentWrapper.mountComponent (ReactCompositeComponent.js:257) at Object.mountComponent (ReactReconciler.js:47) at ReactDOMComponent.mountChildren (ReactMultiChild.js:240) at ReactDOMComponent._createInitialChildren (ReactDOMComponent.js:699) at ReactDOMComponent.mountComponent (ReactDOMComponent.js:524) at Object.mountComponent (ReactReconciler.js:47)

I use it the exact same basic way it was recommended in here. Any idea what might be causing this?

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 15 (6 by maintainers)

Most upvoted comments

@wojtekmaj I’m seeing this problem with v6.10 using React v15.6.1 still

kpheasey on Apr 9, 2018

Same issue using React 15.6.1 with example from README.md

@wojtekmaj

import DatePicker from 'react-date-picker';

class MyApp extends Component {
  state = {
    date: new Date(),
  }

  onChange = date => this.setState({ date })

  render() {
    return (
      <div>
        <DatePicker
          onChange={this.onChange}
          value={this.state.date}
        />
      </div>
    );
  }
}

debovis on Mar 7, 2018