update redirect url on the config file and controller

config/knet.php

@@ -45,7 +45,7 @@
     | The merchant URL where Payment Gateway send the authorization response
     |
     */
-    'response_url' => env('KENT_RESPONSE_URL') ?? url('/knet/response'),
+    'response_url' => env('KENT_RESPONSE_URL') ?? '/knet/response',
 
     /*
     |--------------------------------------------------------------------------
@@ -56,7 +56,7 @@
     | error while processing the transaction.
     |
     */
-    'error_url' => env('KENT_ERROR_URL') ?? url('/knet/error'),
+    'error_url' => env('KENT_ERROR_URL') ?? '/knet/error',
     'success_url' => env('KENT_SUCCESS_URL', '/'),
 
     /*

src/Http/Controllers/KnetController.php

@@ -52,7 +52,7 @@ public function handleKnet(Request $request)
      */
     protected function successMethod($parameters = [])
     {
-        return redirect(config('knet.success_url'));
+        return redirect(url(config('knet.success_url')));
     }
 
     /**

src/Invoice.php

@@ -141,16 +141,6 @@ public function downloadAs($filename, array $data)
         ]);
     }
 
-    /**
-     * Get the Stripe transaction instance.
-     *
-     * @return \Stripe\Invoice
-     */
-    public function asStripeInvoice()
-    {
-        return $this->transaction;
-    }
-
     /**
      * Dynamically get values from the Stripe transaction.
      *
@@ -161,4 +151,4 @@ public function __get($key)
     {
         return $this->transaction->{$key};
     }
-}
+}