Code-Snippets-Functions/Execute a function on a child site/WooCommerce/hide-can-not-add-another-product-to-cart-error-message.txt

function filter_woocommerce_cart_product_cannot_add_another_message( $message, $product_data ) {    
    $message = '<div class="hide-this-error-message"></div>';
    
    return $message;
}
add_filter( 'woocommerce_cart_product_cannot_add_another_message', 'filter_woocommerce_cart_product_cannot_add_another_message', 10, 2 );

function action_wp_footer() {
    ?>
    <script>
        jQuery(document).ready(function($) {
            $( '.hide-this-error-message' ).closest( 'ul.woocommerce-error' ).hide();
        });
    </script>
    <?php
}
add_action( 'wp_footer', 'action_wp_footer' );