fix parameters for invoices

app/Repositories/Shop/Invoices.php

@@ -47,6 +47,7 @@ class Invoices
     public static function saveInvoice($orderId, $data)
     {
         $data['order_id'] = $orderId;
+        $data['date_invoice'] = date('Y-m-d');
 
         return self::store($data);
     }