Error:-Action not defined

When i added a elgg form and the default action is called on submit button, an error occurred that is mentioned below.

The Requested action (card) was not defined in the system.It occurred when i clicked on submit button of form. I have already registred the action named card in my start.php.  my action location is:-


and i registered my action in start.php file using:- 

elgg_register_action('payments/checkout/stripe', __DIR__ . '/actions/payments/checkout/card.php', 'public');
In my form:-
<form method="post" action="http://localhost/elgg-2.3.10/action/card&quot; class="elgg-form elgg-form-card">
Now where did i made the mistake?