Method error

lib/util/logger.ts:202–204

(messageOrLambda: string | (() => string), namespace = "z2m")

    }

    public error(messageOrLambda: string | (() => string), namespace = "z2m"): void {
        this.log("error", messageOrLambda, namespace);
    }

    public warning(messageOrLambda: string | (() => string), namespace = "z2m"): void {
        this.log("warning", messageOrLambda, namespace);