draggable element must have an item slot -

draggable element must have an item slot - error_ draggable element must have an item slot 1、Error: draggable element must have an item slot 升级组件 npm i -S vuedraggable@next 使用示例 div class=col-3> error 1089 ion-modal is a dialog that appears on top of mobile app content, and must be dismissed before interaction resumes Learn more about custom modal components

error_ replication slot is active for pid I' facing with following error: Copy Error: draggable element must have an item slot at computeNodes ``` Has anybody idea how I could solve this problem?