Required Field not working with Buy Now Button

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The issue is caused by the?Blonwe Core?plugin’s ‘Buy Now’ button, which adds a custom?Add to Cart?function that does not check extra field values.
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To resolve this, please try adding the following code to your child theme’s functions.php file to add the required attribute for the custom field:

add_action('wp_footer','th_add_required_attribute',999);
function th_add_required_attribute(){
    if(!is_product()){
        return;
    }
    ?>
    <script>
        jQuery(document).ready(function($) {
            // Add required attribute to the custom input field
            $('input[name="email"]').attr('required', 'required');
        });
     </script>
    <?php
}

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