Magento 2.3: How To Initialize Js…?

Question

I'm new to Magento 2.3, I was trying to apply jQuery DataTable and it's done, after that, I want to add it's Button Extention, for that i need to add two more js,so i initialize it, now i'm getting error in my console, Here is my code:

/EC/Downloads/view/adminhtml/requirejs-config.js

 var config = {
    map: {
   '*': {
       dataTables: 'EC_Downloads/js/datatables.min'
     }
   }
 };

/EC/Downloads/view/adminhtml/templates/test.phtml

<script>
require(['jquery', 'jquery/ui','dataTables'], function($){ 
    $(document).ready(function($){
        $('#example').DataTable({
            dom: 'Bfrtip',
            buttons: [
            'print'
        ]
        });
    });
});
</script>

Initializing other two js button.js, button_print.js like this:

These Js files are located in:

/EC/Downloads/view/adminhtml/web/js/buttons.js

/EC/Downloads/view/adminhtml/web/js/buttons_print.js

<script type="text/x-magento-init">
    {
        "*": {
            "EC_Downloads/js/buttons":{},
            "EC_Downloads/js/buttons_print":{}
        }
    }        
</script>

Getting This Error: