soundcloud-player | concept SoundCloud player which uses public API | Bot library

The way you are setting up your handler function is not correct. You are also binding in your constructor AND inline with an arrow function inside of the onClick event for the button. You only need to bind in one place.

Take a look at the codesandbox example I made so you can see how to declare a class method handler function and use it with a click event. Notice that there is no constructor here or arrow function to bind on the onClick event? That is because the binding is happening on the class method. handleClick = () => {}