TypeError: Cannot read property 'value' of null

문제의 코드

  const onSelectCrop = (e) => {
    console.log(e.target.value);
    setOptions((options) => ({
      ...options,
      selectedCrop: e.target.value,
    }));
  };

해결된 코드

  const onSelectCrop = (e) => {
    console.log(e.target.value);
    const crop = e.target.value;
    setOptions((options) => ({
      ...options,
      selectedCrop: crop,
    }));
  };

Reference

• https://reactjs.org/docs/events.html#event-pooling