Magento 2 : Uncaught Error: cannot call methods on modal prior to initialization; attempted to call method ‘show’

i am using below code to show modal, i am using semantic ui ,i get below error

**

Uncaught Error: cannot call methods on modal prior to initialization; attempted to call method 'show'
    at Function.error (jquery.js:259)
    at HTMLDivElement. (widget.js:186)
    at Function.each (jquery.js:376)
    at jQuery.fn.init.each (jquery.js:142)
    at jQuery.fn.init.$.fn. [as modal] (widget.js:182)
    at :4:32
    at Object.execCb (require.js:1650)
    at Object.context.execCb (resolver.js:145)
    at Module.check (require.js:866)
    at Module.enable (require.js:1143)

**

My code

 require([
            'jquery','semantic/minjs'
            ], function($,semantic) {            
                $('.ui.modal').modal('show');
            }
        );