Payment method icons in the checkout page

Hello,

Can you please let me know if the theme is hiding payment method icons?

I would like to add payment icons for credit cards for example (I use stripe), but even with custom code below I can’t get it to work .

Thanks.

add_filter( 'woocommerce_gateway_icon', 'sort_stripe_payment_icons', 10, 2 );
function sort_stripe_payment_icons( $icons_str, $payment_id ) {
    if ( $payment_id === 'stripe' && is_checkout() ) {
        $available_gateways = WC()->payment_gateways->get_available_payment_gateways();
        $stripe = $available_gateways['stripe'];

        $icons = $stripe->payment_icons();

        $icons_str = '';
		
        $icons_str .= isset( $icons['amex'] ) ? $icons['amex'] : '';
		$icons_str .= isset( $icons['visa'] ) ? $icons['visa'] : '';
        $icons_str .= isset( $icons['mastercard'] ) ? $icons['mastercard'] : '';
    }
    return $icons_str;
}