I'm using sitespeed io and selenium + javascript to load test a web page. When I switched to an iframe with an embedded YouTube player, I got an error.

Error: ERROR: [plugin.browsertime]https://www.youtube.com/embed

    generated the following errors in the coach {
      "performance": {
        "firstContentfulPaint": "Cannot read properties of undefined (reading 'startTime')",
        "longTasks": "Cannot read properties of undefined (reading 'startTime')"
      }

Code:

const iframe = await driver.findElement(webdriver.By.id('widget2'));
 await driver.switchTo().frame(iframe);//Error Happens here