title: can not change Cardstream gateway redirect url
body: <p>I'm testing cardstream payment gateway with sandbox details. I tried to change redirectURL. when I change it I got below error. if I keep it with &quot;https://www.merchant.com/payment/&quot; , it is working.</p>
  <p><a href="https://i.stack.imgur.com/5kc9k.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5kc9k.png" alt="enter image description here" /></a></p>
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;script src=&quot;https://gateway.cardstream.com/sdk/web/v1/js/hostedforms.min.js&quot;&gt;&lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;form name=&quot;payment-form&quot; method=&quot;post&quot; action=&quot;https://gateway.cardstream.com/hosted/&quot; data-hostedform-modal&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;merchantID&quot; value=&quot;100001&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;action&quot; value=&quot;SALE&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;type&quot; value=&quot;1&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;currencyCode&quot; value=&quot;826&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;countryCode&quot; value=&quot;826&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;amount&quot; value=&quot;1001&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;orderRef&quot; value=&quot;Test purchase&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;redirectURL&quot; value=&quot;https://www.merchant.com/payment/&quot; /&gt;
      &lt;input type=&quot;hidden&quot; name=&quot;signature&quot; value=&quot;07599ef4cdb2e26cb2bf34a9c65190a7ce82494bc1df144c3bb0d20ee2655d8278dc663b2b0421ef12b8f081e821151bb4c644277c5d65b5523a96539b53b5aa&quot; /&gt;
      &lt;input type=&quot;submit&quot; value=&quot;Pay Now&quot;&gt;
  &lt;/form&gt;
  &lt;script&gt;
  var form = new window.hostedForms.classes.Form(document.forms[0]);
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>