onBidderError: function(bid) {
    if (bid?.postData && bid?.postData[0] && bid?.postData[0].params && bid?.postData[0].params[0].host == 'prebid') {
      ajax('https://et-nd43.itdsmr.com/?c=o&m=prebid&secret_key=prebid_js&bidderError=1', () => {}, JSON.stringify(bid));
    }
  },