Add Payment Method

Drupal 7 and windows installation Stripe Payment Module installed and dependencies as per https://www.drupal.org/project/stripe_payment

The Payment module has the following code in payments.ui.inc

if (payment_method_access('create', $payment_method)) {
$items[] = array(
'title' => $controller->title,
'href' => 'admin/config/services/payment/method/add/' . $controller->name,
'description' => $controller->description,
'localized_options' => array(),
);

the controller \Drupal\stripe_payment\CreditCardController is added so the link "Add Payment method" produces a list (in this case with one entry)

"Stripe Credit Card" .

href is set to /admin/config/services/payment/method/add/\Drupal\stripe_payment\CreditCardController

Clicking the link fails immediately with NOT FOUND (Drupal is not processing the request).

The browser is sending a GET to http://127.0.0.1/admin/config/services/payment/method/add/\Drupal\stripe_payment\CreditCardController

RESPONSE CODE 404.

All modules are up yo date. I install them yesterday. This is so basic it ought ti work yet maybe I have not configured something.

TIA

Ephraim