bug fixed

kucoinCollector.js

@@ -71,6 +71,7 @@ class KucoinCollector extends BaseCollector{
 
     setInterval(()=>{
       this.api.getOrderbook(filteredSymbols[index % filteredSymbols.length], 5, IPs[index % IPs.length], depthCallback.bind(this));
+      index++;
     },interval);
 
     // this._fetchDepthByWebsocket(symbols,subscribeDepth,callback)