Winston最新版本代码未创建日志文件

Question

我试图在node.js中安装最新的Winston版本，但没有创建日志文件。但是旧版本创建了日志文件。如何在最新版本的代码中实现此功能？

winston.js

/**
 * @fileoverview Winston Logging Configuration file.
 */

// Import Modules
const winston = require('winston');
require('winston-mongodb');
require('express-async-errors');

/**
 * Function used to configure logging for the app.
 * @param {Function} app - top-level function Express funtion.
 * @returns {void} - none.
 */
const winstonLogging = function () {
    // Uncaught Exceptions and UnchandledRejections 
    winston.handleExceptions(
        new winston.transports.Console({ colorize: true, prettyPrint: true }),
        new winston.transports.File({ filename: 'uncaughtExceptions.log' }));
    process.on('unhandledRejection', (ex) => {
        throw ex;
    });

    // Winston Configuration
    winston.add(new winston.transports.File({ filename: 'logfile.log' }));
    winston.add(new winston.transports.MongoDB({
        db: 'mongodb://olcadmin:olcmongodb@127.0.0.1:27017/local?authMechanism=SCRAM-SHA-1&authSource=admin',
        level: 'info'
    }));
}

module.exports = winstonLogging;

旧版本

"winston": "^2.4.0"  
Its working fine and sucessfully created log file

新版本

"winston": "^3.2.1"  
Its not created log file  

我遇到错误

[winston] Attempt to write logs with no transports {"message":"Server Started and Listening on port 5200","level":"info"}