Puppeteer 永远不会完全加载页面

Question

I've been trying to use Puppeteer to scrape a website, but when I try to obtain the screenshot it never loads it either goes to a TimeoutError or just never finishes.

(async () => {
        try{
        const navegador = await puppeteer.launch({headless: false},{defaultViewport: null});
        const pagina = await navegador.newPage();
        await pagina.setDefaultNavigationTimeout(3000);
        await pagina.goto(urlSitio, {waitUntil: 'load'});
        await pagina.setViewport({width: 1920, height: 1080});
        await pagina.waitForNavigation({waitUntil: 'load'});
        await pagina.screenshot({
            fullPage: true,
            path: `temporales/temporal.png`
        });
        await navegador.close();
        }catch(err){
            console.log(err);
        }
    })();

I've tried to set await pagina.setDefaultNavigationTimeout(3000); to 0 and multiple other numbers.

I've tried removing headless: false .

I've also tried putting all the different options for

await pagina.waitForNavigation({waitUntil: 'load'});

The website example I'm using is https://www.xtract.io/

Error message:

(node:9644) UnhandledPromiseRejectionWarning: TimeoutError: Navigation timeout of 3000 ms exceeded
    at C:\Users\Samuel\Desktop\somnus-monitor\back\node_modules\puppeteer\lib\cjs\puppeteer\common\LifecycleWatcher.js:106:111
    at async FrameManager.navigateFrame (C:\Users\Samuel\Desktop\somnus-monitor\back\node_modules\puppeteer\lib\cjs\puppeteer\common\FrameManager.js:90:21)
    at async Frame.goto (C:\Users\Samuel\Desktop\somnus-monitor\back\node_modules\puppeteer\lib\cjs\puppeteer\common\FrameManager.js:416:16)
    at async Page.goto (C:\Users\Samuel\Desktop\somnus-monitor\back\node_modules\puppeteer\lib\cjs\puppeteer\common\Page.js:789:16)
    at async C:\Users\Samuel\Desktop\somnus-monitor\back\index.js:103:9
(Use `node --trace-warnings ...` to show where the warning was created)
(node:9644) 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(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:9644) [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.

Answer 1

There appears to be an unnecessary waitForNavigation call here. Since you already waited until page load, waiting for another navigation that never occurs is going to cause a timeout. Re-add the commented-out line below to reproduce your problem.

const puppeteer = require("puppeteer");

(async () => {
  const browser = await puppeteer.launch({
    headless: false, 
    defaultViewport: null,
  });

  try {
    const [page] = await browser.pages();
    await page.setViewport({width: 1920, height: 1080});
    await page.goto("https://www.xtract.io/", {waitUntil: "load"});
    //await page.waitForNavigation({waitUntil: "load"}); // this will timeout
    await page.screenshot({
      fullPage: true,
      path: "temporal.png",
    });
  }
  catch (err) {
    console.error(err);
  }

  await browser.close();
})();

As an aside, I don't think you meant to pass multiple objects to puppeteer.launch . Just add all of the settings to a single object as the second argument as shown above.

Answer 2

i have the same question, I refer to this website to solve.

slove this question

 await page.goto('https://ourcodeworld.com', { waitUntil: 'load', // Remove the timeout timeout: 0 });

Answer 3

I would wait for a selector and not waste time waiting for the all page to load. instead, use page.waitForSelector('#myId') Waiting for all the pages to load can take time instead you can wait only for what you need and then take a screenshot.