Asynchronous calls for getCandles

[4rocky4]

I would like to calls getCandles multiple times in a promise loop.

function test(coinList) {
  var deferred = Q.defer();
  var promises = [];
  coinList.forEach(function (coin) {
    promises.push(getCandles(coin));
  });

  return Q.allSettled(promises).then(function (results) {

    var listMarkets = [];
    results.forEach(function (r) {
      console.log(r.value.MarketName);
    });

    return listMarkets;
  });

}

function getCandles(coin) {
  var deferred = Q.defer();
  bittrex.getcandles({
    marketName: coin.MarketName,
    tickInterval: 'hour', // intervals are keywords (oneMin, fiveMin, hour, thirtyMin, Day)
  }, function (data, err) {
        if (err) {
          console.log('1 err:' + coin.MarketName);
          deferred.resolve(coin);
        }

        if (data) {
          console.log('1 :' + coin.MarketName);
          coin.Test = 10;
          deferred.resolve(coin);
        }
      });

  return deferred.promise;
}

• CoinList is a list of markets
  It works but I get some errors at one time.

...
1 :BTC-NEOS
1 :BTC-LGD
1 :BTC-SPR
1 :BTC-XMG
1 :BTC-VTC
1 :BTC-QTUM
1 :BTC-MAID
1 :BTC-DOPE
1 :BTC-EXCL
1 :BTC-PAY
1 :BTC-NLG
1 :BTC-REP
1 err:BTC-OMG
1 err:BTC-GAM
1 err:BTC-KORE
1 err:BTC-SNT
1 err:BTC-NAV
1 err:BTC-EFL
1 err:BTC-EBST
1 err:BTC-PKB

I tried to call the same market with each request, I have the same problem.

Should I change something in my function to fix it or is there a bug ?

Thanks for any help.