ClassicEditor .create( editorElement, { ckfinder: { uploadUrl: \'my_server_url\' } } ) .then( ... ) .catch( ... );
Success response :
{ "uploaded": true, "url": "http://127.0.0.1/uploaded-image.jpeg" }
Failure response :
{ "uploaded": false, "error": { "message": "could not upload this image" } }