message: Fixed NPE in getChargingStationClient()
diff: @@ -141,6 +141,7 @@ export default class JsonCentralSystemServer extends CentralSystemServer {
  module: MODULE_NAME, method: 'getChargingStationClient',
  action: ServerAction.WS_SERVER_CONNECTION, message
  });
  + return;
  }
  // Return the client
  return jsonWebSocket.getChargingStationClient();
  