await @page.exposeFunction('disableFrameWebRTC', () =>
        await @page.waitForSelector('html')
        console.log(">>> Disabling WebRTC")

        await @page.evaluate(() =>
          observer = new MutationObserver((mutations, observer) =>
            [...document.getElementsByTagName("iframe")].forEach((elem) =>
              try
                elem.contentWindow.RTCPeerConnection = null;
                elem.contentWindow.webkitRTCPeerConnection = null;
                console.log('Remove WebRTC from iframe');
              catch err
                console.log('>>> Skip iframe');
            )
          )

          observer.observe(document, {
            attributes: true,
            childList: true,
            characterData: false,
            subtree: true
          })
        )
      )

      await @page.evaluateOnNewDocument(() =>
        console.log("Event 'evaluateOnNewDocument' fired");
        disableFrameWebRTC();
        window.RTCPeerConnection = null;
        window.webkitRTCPeerConnection = null;
      )