How to start custom crop option?

[TmVukov]

Obviously, that option exists, but when i try to replicate it, i'm getting errors.

So i'm literally trying to implement this code from your "service-basic.js" file, which, as far as I can see, starts the custom crop mode:

$btnCrop.on('click', function () {
  imageEditor.startDrawingMode('CROPPER');
  $displayingSubMenu.hide();
  $displayingSubMenu = $cropSubMenu.show();
});

The example code in React would be something like this:

const handleCustomCrop = () => {
       if (editorRef.current) {
           const imageEditor = editorRef.current.getInstance()
           imageEditor.startDrawingMode('CROPPER')
       }
   }

This shows the plus icon to start cropping, but when I try to do that i get this error?

Cannot read properties of null (reading 'set')
TypeError: Cannot read properties of null (reading 'set')
at Cropper._onFabricMouseMove (http://localhost:3000/static/js/bundle.js:518311:24)
at klass.fire (http://localhost:3000/static/js/bundle.js:472426:60)
at klass._handleEvent (http://localhost:3000/static/js/bundle.js:484075:20)
at klass.__onMouseMove (http://localhost:3000/static/js/bundle.js:484338:20)
at klass._onMouseMove (http://localhost:3000/static/js/bundle.js:483922:20)

[nulifendou11]

遇到了同样的问题