app/src/main/java/ai/pai/lensman/printer/PrinterSettingPresenter.java

@@ -76,7 +76,7 @@ public class PrinterSettingPresenter implements PrinterSettingContract.Presenter

                         cancelDiscovery();
              

                         context.unregisterReceiver(PrinterStatusBroadcastReceiver);
              

                         if(connection!=null){
              

                -            App.getAppContext().unbindService(connection);
              

                +            context.unbindService(connection);
              

                         }
              

                     }