Error with Power Virtual Agent: Site Missing code 403 from https://directline.botframework.com/v3/directline/conversations

Hi the following piece of code was working fine up to last week, from today we are getting the following 403 error after successfully retrieve the token and when performing request to: https://directline.botframework.com/v3/directline/conversations

response body:

"error": {
    "code": "BadArgument",
    "message": "Site missing. Learn more about sites  https://docs.microsoft.com/azure/bot-service/bot-service-channel-connect-directline?view=azure-bot-service-4.0#add-new-site."
  }

Here is the full test code:

<!DOCTYPE html>
<html lang="en-US">
  <head>
    <title>Web Chat</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <script crossorigin="anonymous" src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>
    <style>
      html,
      body {
        height: 100%;
      }

      body {
        margin: 0;
      }

      #webchat {
        height: 100%;
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div id="webchat" role="main"></div>
    <script>
      (async function() {
        const res = await fetch('https://ced36af1b92ee6ae99db50a8734a78.5a.environment.api.powerplatform.com/powervirtualagents/bots/b8ab704c-8d06-417e-b2b5-fc65a0abf77f/directline/token?api-version=2022-03-01-preview', { method: 'GET' });
        const { token } = await res.json();

        window.WebChat.renderWebChat(
          {
            directLine: window.WebChat.createDirectLine({ token })
          },
          document.getElementById('webchat')
        );

        document.querySelector('#webchat > *').focus();
      })().catch(err => console.error(err));
    </script>
  </body>
</html>

microsoft / BotFramework-DirectLineJS

Error with Power Virtual Agent: Site Missing code 403 from https://directline.botframework.com/v3/directline/conversations #387