angularjs - Uncaught Error: cannot call methods on sortable prior to initialization; attempted to call method 'option' -

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i getting error when trying use ui-sortable.

jquery-3.1.0.min.js:2 uncaught error: cannot call methods on sortable prior initialization; attempted call method 'option'

thanks in advance.

the meaning of error is : $this.draggable('enable'); called before $this.draggable();.

check execution flow of program : make sure have indeed initialized plugin (e.g : called $this.draggable();) before trying it.


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