private logPrefix = (connectorId?: number): string => {
return Utils.logPrefix(
` ${this.chargingStation.stationInfo.chargingStationId} | ATG${
- connectorId !== undefined ? ` on connector #${connectorId.toString()}` : ''
+ !Utils.isNullOrUndefined(connectorId) ? ` on connector #${connectorId.toString()}` : ''
}:`
);
};