CKEditor - Upload file on Drag and Drop

class Editor extends ClassicEditor {

    insertHTML(html) {
        const viewFragment = this.data.processor.toView(html);
        const modelFragment = this.data.toModel(viewFragment);
        this.model.insertContent(modelFragment);
    }

    getSelection() {
        const selection = this.model.document.selection;
        const range = selection.getFirstRange();

        for (const item of range.getItems()) {
            console.log(item.data) //return the selected text
        }
    }

    handleAndDragDropEvent() {
        this.editing.view.document.on('drop', function (evt, data) {
            let name = data.dataTransfer.files[0].name
            let file = data.dataTransfer.files[0]
            const formData = new FormData();
            formData.append('image', file);
            formData.append('name', name);
            fetch('http://localhost:3000/image', {
                method: 'POST',
                body: formData,
            })
            .then(response => response.json())
            .then(data => {
                let url = data.url;
                console.log(url)
                editor.insertHTML(`
                    <figure class="image ck-widget ck-widget_with-resizer ck-widget_selected" contenteditable="false">
                        <img src="${url}" />
                    </figure>`)

                ;
            })
            .catch(error => {
                console.log(error);
            });
        })
    }

}

<script>
        Editor
            .create(document.querySelector('.editor'), Editor.config )
            .then(editor => {
                window.editor = editor;
                editor.handleAndDragDropEvent();
            })
            .catch(error => {
                console.error(error);
            });
</script>

const express = require('express');
const cors = require('cors');
const multer = require('multer');

const storage = multer.diskStorage({
    destination: function(req, file, cb) {
        cb(null, 'uploads/');
    },
    filename: function(req, file, cb) {
        cb(null, file.originalname);
    },
});

const upload = multer({ storage: storage });

const app = express();

app.use(cors());

app.use(express.static('uploads'));



app.post('/image', upload.single('image'), function(req, res, next) {
    res.json({
        url: 'http://localhost:3000/' + req.file.originalname,
    });
});
console.log("start")
app.listen(3000);