I use datepicker-babakhani(Javascript date library for parsing, validating, manipulating, and formatting persian dates System.http://babakhani.github.io/PersianWebToolkit/beta/persian-date/) to select the solar date, but I get the following error, can I fix this error?

This is my code, which is in the file with the ‍.bladeh.php format

<input class="observer-example" />
<script>
    $('.observer-example').persianDatepicker({
        observer: true,
        format: 'YYYY/MM/DD',
        altField: '.observer-example-alt'
    });
</script>