Remove role="form" on a form element.

Role Form should be use on a region of the document that  represents a collection of form-associated elements.
<div role=”form”></div> GOOD
<form role=”form”></form> BAD

templates/default/order-invoice.html

@@ -29,7 +29,7 @@
 
             {form name="thelia.order.coupon"}
 
-            <form id="form-coupon" action="{url path="/order/coupon"}" method="post" role="form" {form_enctype form=$form}>
+            <form id="form-coupon" action="{url path="/order/coupon"}" method="post" {form_enctype form=$form}>
 
                 {form_hidden_fields form=$form}
 
@@ -163,7 +163,7 @@
             {/form}
             {form name="thelia.order.payment"}
 
-            <form id="form-cart-payment" action="{url path="/order/invoice"}" method="post" role="form" {form_enctype form=$form}>
+            <form id="form-cart-payment" action="{url path="/order/invoice"}" method="post" {form_enctype form=$form}>
 
                 {form_hidden_fields form=$form}