SKU shortode

Hi there,
I’m using the code below in my functions.php to be able to output the SKU in various places all over my templates with [woo_sku]. While this works fine, I can’t access the template editor (elementor) without uncommenting the function, as there is no product context in the template and the error prevents the editor from loading.

Is there a way to catch the error and return an empty value when not in a product context?

function display_woo_sku() {
    global $product;
    return $product->get_sku();
}
add_shortcode( 'woo_sku', 'display_woo_sku' );

Cheers,
-martin