create 1 general ‘required field’ message

Hi,

I’m trying to create 1 single gernal error message for required fields.

function my_woocommerce_add_error( $error ) {
    if (strpos($error,'required') !== false) {
        $error = 'Required';
    }
    return $error;
}
add_filter( 'woocommerce_add_error', 'my_woocommerce_add_error' );

Using this I can change all of them to something general. But then if 4 required fields are open, you would get 4 lines. I would like to only show 1.

Any idea how to do this?