bug fixed

kucoinCollector.js

@@ -56,7 +56,7 @@ class KucoinCollector extends BaseCollector{
         console.error("subscribe error");
         console.error(error);
       }else{
-        callback(result.asks.slice(0,depth), result.bids.slice(0,depth), result.symbol, result.timestamp);
+        callback(result.asks.slice(0,depth).map((item)=>[item[0],item[1]]), result.bids.slice(0,depth).map((item)=>[item[0],item[1]]), result.symbol, result.timestamp);
       }
     }
     let buffer = [];