It is important to consider order when setting up ZingChart using HTML, CSS and JavaScript. You must place the javascript after the chart div (The div with id="myChart" or something similar).
Here is an example of how ZingChart should be set up:
zingchart.MODULESDIR = "https://cdn.zingchart.com/modules/"; ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9","ee6b7db5b51705a13dc2339db3edaf6d"]; Powered by ZingChart var myConfig = { type: 'bar', series: [ { values: [35,42,67,89,25,34,67,85] } ]};zingchart.render({ id: 'myChart', data: myConfig, height: '100%', width: '100%' });