NetworkOnMainThreadException about java HOT 5 CLOSED

java.lang.NullPointerException
       at com.android.okhttp.Connection.close(Connection.java:1056)
       at com.android.okhttp.internal.Util.closeQuietly(Util.java:110)
       at com.android.okhttp.internal.http.HttpEngine.release(HttpEngine.java:588)
       at com.android.okhttp.internal.http.HttpURLConnectionImpl.disconnect(HttpURLConnectionImpl.java:104)
       at com.pubnub.api.HttpClientCore.shutdown(HttpClientCore.java:213)
       at com.pubnub.api.SubscribeWorker.shutdown(SubscribeWorker.java:111)
       at com.pubnub.api.Worker.die(RequestManager.java:56)
       at com.pubnub.api.RequestManager.resetWorkers(RequestManager.java:184)
       at com.pubnub.api.RequestManager.resetHttpManager(RequestManager.java:203)
       at com.pubnub.api.PubnubCore._request(PubnubCore.java:1550)
       at com.pubnub.api.PubnubCore._subscribe_base(PubnubCore.java:1539)
       at com.pubnub.api.PubnubCore._subscribe_base(PubnubCore.java:1277)
       at com.pubnub.api.PubnubCore.resubscribe(PubnubCore.java:1580)
       at com.pubnub.api.PubnubCore.unsubscribe(PubnubCore.java:1006)
       at com.pubnub.api.Pubnub.unsubscribe(Pubnub.java:13)
       at com.pubnub.api.PubnubCore.unsubscribe(PubnubCore.java:1035)
       at com.pubnub.api.Pubnub.unsubscribe(Pubnub.java:13)
       at com.tophatter.services.LiveAuctionService$3.run(LiveAuctionService.java:212)
       at android.os.Handler.handleCallback(Handler.java:733)
       at android.os.Handler.dispatchMessage(Handler.java:95)
       at android.os.Looper.loop(Looper.java:136)
       at android.app.ActivityThread.main(ActivityThread.java:5476)
       at java.lang.reflect.Method.invokeNative(Method.java)
       at java.lang.reflect.Method.invoke(Method.java:515)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
       at dalvik.system.NativeStart.main(NativeStart.java)