How to silence 'Navigation failed because browser has disconnected'

How to I silence this error (node:12171) UnhandledPromiseRejectionWarning: Error: Navigation failed because browser has disconnected!

page.goto('https://example.com/')
await page.waitFor('body')
const body = await page.evaluate(() => document.querySelector('body').textContent)
console.log(body)

await this.page.close()
await browser.close()

I can get body element successfully but because the browser closes before the page.goto has finished I get disconnected error which I want to silence. (not sure if this specific example works, this is pseudo code I haven’t tested)

[ghost]

I think this might have fixed my problem

await Promise.race([
  this.page.goto('https://example.com/'),
  this.page.waitFor('body')
])

[ghost]

I’m actually still getting a problem that I don’t get how to solve. It seems that no matter how many try catch I put it doesn’t catch the error and stops my program. It’s hard to debug cause it only happens every few hours and not sure what causes it but it only happens when I use page.waitFor

try {
  try {
    try {
      try {
        const timeout = 180 * 1000
        await Promise.race([
          page.goto('https://example.com/', {timeout}),
          page.waitFor('body', {timeout})
        ])
      }
      catch (e) {}
    }
    catch (e) {}
  }
  catch (e) {}
}
catch (e) {}

(node:75313) UnhandledPromiseRejectionWarning: TimeoutError: waiting for target failed: timeout 30000ms exceeded
    at Function.waitWithTimeout (/node_modules/puppeteer/lib/helper.js:214:26)
    at Browser.waitForTarget (/node_modules/puppeteer/lib/Browser.js:214:27)
    at Browser.<anonymous> (/node_modules/puppeteer/lib/helper.js:111:23)
    at Launcher.launch (/node_modules/puppeteer/lib/Launcher.js:178:21)
    at process._tickCallback (internal/process/next_tick.js:68:7)
(node:75313) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:75313) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.