Object has no method 'Timepicker'-Collection of common programming errors

Currently I am working on a project with bootstrap supr theme. By default it is loading following js files :

bootstrap.js colorpicker.js, date.js, elfinder.min.js, fullcalendar, iosorientation, jpages.min, jquery-ui, jquery-cookie, jquery-datatable, jquery-duallistbox, jquery-elastic, jquery-ibutton, jquery-imputlimiter, jqury, jquery-knob, jquery-lazyload, jquery-min, jquery-ui.button, jquery-ui.button, responsivetable, timepicker-addon etc.

Whenever in a page, when I am using timepicker in a page using the code

$(document).ready(function() {
    $("#AcAppointments_start_time").timepicker({
        ampm: true,
        timeFormat: 'hh:mm TT',
        stepMinute: 5,
    });

    $("#AcAppointments_end_time").timepicker({
        ampm: true,
        timeFormat: 'hh:mm TT',
        stepMinute: 5,
    });
});

in console I am getting error Uncaught TypeError: Object [object Object] has no method 'timepicker'

What may be the possible reasons for this error ??

Update :

included js are