Vue Draggable cannot drop in other table

Vue JS: Draggable div error_ draggable element must have an item slot Error: Item slot must have only one child It is the exact same code as above but with a pug inline comment template lang=' error 1089 Error: Item slot must have only one child It is the exact same code as above but with a pug inline comment template lang='

error_ draggable element must have an item slot slot content may have changed force update slots and mark instance for ` + `Note the target element must exist before the component is mounted