Warning: Failed prop type: The prop `createCourse` is marked as required in `CoursesPage`, but its value is `undefined`

My code works without mapDispatchToProps function and setting the dispatch function at the handleSubmit and at CoursesPage.propTypes instead of using createCourse. I’ve updated the CoursesPage.js code in order to use mapDispatchToProps and something has broke. This is my code at sandbox

Answer

You have two problems:

  1. You need to pass mapDispatchToProps to connect
export default connect(mapStateToProps, mapDispatchToProps)(CoursesPage);
  1. createCourse is not a prop, it’s a function you’re importing