Hello, i have problem with buttons in my project. I am using Laravel and i added datatables. It works for me to search and select how many records there are on the page. Unfortunately, buttons for exporting pdf, excel, copying, printing do not work. It's my code in blade.php in section @js:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jszip/2.5.0/jszip.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/pdfmake.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.36/vfs_fonts.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.11.3/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/1.11.3/js/dataTables.bootstrap4.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/2.0.1/js/dataTables.buttons.min.js"></script>
<script type="application/json" src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.2/css/bootstrap.css"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/2.0.1/js/buttons.bootstrap4.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/2.0.1/js/buttons.html5.min.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/buttons/2.0.1/js/buttons.print.min.js"></script>

<script>
    $(document).ready(function () {
        $('.dropdown-toggle').dropdown();
    });

    $(document).ready( function (){
        $('#is-dataTable').DataTable(
            {
                "dom": '<"html5buttons"B>lTfgt<"row"<"col-md-6"i><"col-md-6"p>>',
                buttons: [
                    { extend: 'copy'},
                    {extend: 'csv'},
                    {extend: 'excelHtml5', title: 'ExampleFile', class: "buttonExcel"},
                    {extend: 'pdf', title: 'ExampleFile'}
                ]
            }
        );
    });

</script>

I can't see this buttons.

Edited by Colin - Syntax highlighting. Details on how to highlight code using markdown can be found in this guide.