我在NextJS中构建了一个简单的工具，给定一个URL执行puppeteer并返回web vitals，但是当这样做时，我无法检索结果，它不打印任何东西，这可能是什么原因？

const browser = await puppeteer.launch({ headless: false,  });
const website = await browser.newPage();

await website.goto(request.url, {waitUntil: 'networkidle0'});

// inject the web vitals library into the page
await website.addScriptTag({url: 'https://unpkg.com/web-vitals@2/dist/web-vitals.umd.js'});

// listen for web vitals metrics from the page
website.exposeFunction('onReport', ({name, value}: any) => {
    console.log(`${name}: ${value}`);
});

const onReport = (data: any) => {
    console.log(data);
}

await website.evaluate(() => {
    webVitals.getCLS(console.log);
    webVitals.getFID(console.log);
    webVitals.getLCP(console.log);
    webVitals.getTTFB(console.log);
    webVitals.getFCP(console.log);
});

await browser.close();