当我尝试使用离子启动新应用程序时，msg.trim不是函数

这是错误：

TypeError：msg.trim不是Logger.log中的函数（/usr/local/lib/node_modules/ionic/node_modules/@ionic/cli-utils/lib/utils/logger.js:78:21）在Logger.error （/usr/local/lib/node_modules/ionic/node_modules/@ionic/cli-utils/lib/utils/logger.js:35:14）。 （/usr/local/lib/node_modules/ionic/dist/index.js:186:22）在Generator.throw（）被拒绝（/usr/local/lib/node_modules/ionic/node_modules/tslib/tslib.js： 101：69）at

这里是我正在运行的命令：

$ ionic启动myApp

我的node.js版本是v8.9.1 ，npm是5.5.1

这是我在logger.js文件中找到的

log(level, msg) {
    if (this.shouldLog(level)) {
        let prefix = this.prefix;
        if (typeof msg === 'function') {
            msg = msg();
        }
        if (prefix) {
            if (typeof prefix === 'function') {
                prefix = prefix();
            }
            msg = util.format(prefix, msg);
        }
        const color = this.getStatusColor(level);
        const status = color.bold.bgBlack;
        const b = chalk_1.default.dim;
        const msgLines = format_1.wordWrap(msg, { indentation: level === 'info' ? 0 : level.length + 3 }).split('n');
        if (msg.trim().includes('n')) {
            msg = msgLines.map((l, i) => {
                // We want these log messages to stand out a bit, so automatically
                // color the first line and separate the first line from the other
                // lines if the message is multi-lined.
                if (i === 0 && this.firstLineColored.includes(level)) {
                    return color(l) + (msgLines.length > 1 ? 'n' : '');
                }
                return l;
            }).join('n') + 'nn';
        }
        else {
            msg = msgLines.join('n');
        }
        msg = this.enforceLF(msg);
        const fmtLevel = () => b('[') + status(level.toUpperCase()) + b(']');
        if (level !== 'info') {
            msg = `${fmtLevel()} ${msg}`;
        }
        this.stream.write(util.format(msg));
    }

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