jointjs - TypeError：在使用 rappid 和 Angular 9 版本时无法读取未定义的属性“ownerDocument”

Question

嗨，我是 Rappid 关节平台的新手，尝试与 Angualr 集成，这里集成以在本地实现与节点的点，我没有找到文档而是能够观察示例，这将有助于分享对 for 的参考快速的文档。

var graph = new joint.dia.Graph;
new joint.dia.Paper({ el: $('#paper-create'), width: 650, height: 200, gridSize: 1, model: graph });

   

     var m1 = new joint.shapes.devs.Model({
            position: { x: 50, y: 50 },
            size: { width: 90, height: 90 },
            inPorts: ['in1','in2'],
            outPorts: ['out'],
            ports: {
                groups: {
                    'in': {
                        attrs: {
                            '.port-body': {
                                fill: '#16A085'
                            }
                        }
                    },
                    'out': {
                        attrs: {
                            '.port-body': {
                                fill: '#E74C3C'
                            }
                        }
                    }
                }
            },
            attrs: {
                '.label': { text: 'Model', 'ref-x': .5, 'ref-y': .2 },
                rect: { fill: '#2ECC71' }
            }
        });
        graph.addCell(m1);
    
    }());
    ```
    
    
    able to face this lines of code as an issue
    ERROR TypeError: Cannot read property 'ownerDocument' of undefined
        at child.init (Paper.mjs:345)
        at child.initialize (index.mjs:37)


Any reference with an explanation will be most helpful and thanks in advance....