Page.goto() always causes a Navigation Timeout - but i can get screenshot somehow

Steps to reproduce

• Puppeteer version: 1.2.0
• Platform / OS version: Windows 7 x64
• Node.js version: 8.11.1

What steps will reproduce the problem? I am trying this code:

// <-- add event on top of file
process.on("unhandledRejection", (reason, p) => {
        console.error("Unhandled Rejection at: Promise", p, "reason:", reason);
        // browser.close(); // <-- no need to close the browser here
});

const puppeteer = require('puppeteer');
async function getPic() {
    try{ // <-- wrap the whole block in try catch
      const browser = await puppeteer.launch(/*{headless: false}*/);
      const page = await browser.newPage();
      await page.setViewport({width: 1000, height: 500}); // <-- add await here so it sets viewport after it creates the page


      //await page.goto('https://www.google.com');  //Old way of doing. It doesn't work for some reason...

      page.goto('https://www.google.com/'); // async


      // wait for either of events to trigger
      await Promise.race([
        page.waitForNavigation({waitUntil: 'domcontentloaded'}),
        page.waitForNavigation({waitUntil: 'load'})
      ]);


      await page.screenshot({path: 'pic.png'});
      await browser.close(); // <-- close browser after everything is done
    } catch (error) {
      console.log(error);
    }
}

getPic();

I request a pic from the page loaded for testing purposes.

With code as it is, i get pic and this error:

Unhandled Rejection at: Promise Promise {
  <rejected> Error: Navigation Timeout Exceeded: 30000ms exceeded
    at Promise.then (C:\...\pupet test\node_modules\pupp
eteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous> } reason: Error: Navigation Timeout Exceeded: 30000ms exceede
d
    at Promise.then (C:\...\pupet test\node_modules\pupp
eteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous>

When i remove the process.on() code in the beginning, i get no pic and this error message:

    at Promise.then (C:\...\pupet test\node_modules\puppeteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous>
(node:5548) UnhandledPromiseRejectionWarning: Error: Navigation Timeout Exceeded
: 30000ms exceeded
    at Promise.then (C:\...\pupet test\node_modules\puppeteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous>
(node:5548) 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:5548) [DEP0018] DeprecationWarning: Unhandled promise rejections are depre
cated. In the future, promise rejections that are not handled will terminate the
 Node.js process with a non-zero exit code.

When process.on() IS there but instead i use await

page.goto('https://www.google.com');

INSTEAD OF

      page.goto('https://www.google.com/'); // async


      // wait for either of events to trigger
      await Promise.race([
        page.waitForNavigation({waitUntil: 'domcontentloaded'}),
        page.waitForNavigation({waitUntil: 'load'})
      ]);

i don’t get the picture and i get this:

Error: Navigation Timeout Exceeded: 30000ms exceeded
    at Promise.then (C:\...\pupet test\node_modules\pupp
eteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous>

Finally, when i remove process.on() and i use await

page.goto('https://www.google.com');

INSTEAD OF

page.goto('https://www.google.com/'); // async


      // wait for either of events to trigger
      await Promise.race([
        page.waitForNavigation({waitUntil: 'domcontentloaded'}),
        page.waitForNavigation({waitUntil: 'load'})
      ]);

i don’t get the picture and i get this:

Error: Navigation Timeout Exceeded: 30000ms exceeded
    at Promise.then (C:\...\pupet test\node_modules\pupp
eteer\lib\NavigatorWatcher.js:71:21)
    at <anonymous>

In conclusion, whenever i don’t use process.on() i don’t have my code executed.

But when i do use process.on() i get the screenshot but i still get the error. Now i know that the ‘unhandledRejection’ event is emitted whenever a Promise is rejected and no error handler is attached to the promise within a turn of the event loop.

Now, when i use :

page.goto('https://www.google.com/').catch(error => console.log("this isn't handled by the try catch since you don't await it", error));

for troubleshooting purposes, i get:

this isn't handled by the try catch since you don't await it Error: Navigation T imeout Exceeded: 30000ms exceeded at Promise.then (C:\Users\User1\Desktop\fb proj\pupet test\node_modules\pupp eteer\lib\NavigatorWatcher.js:71:21) at <anonymous>

Which means page.goto() is the culprit. No matter what i try i cannot seem to make it work. It appears to be completely illogical, how come it throws an error but still manages to get the pic?

If i try stuff like:

const puppeteer = require('puppeteer');

async function getPic() {
	  try { // <-- wrap the whole block in try catch
	      const browser = await puppeteer.launch(/*{headless: false}*/);
	      const page = await browser.newPage();
	      await page.setViewport({width: 1000, height: 500}); // <-- add await here so it sets viewport after it creates the page
	      await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36');
      	  await page.setExtraHTTPHeaders({
        		'Accept-Language': 'en-GB,en-US;q=0.9,en;q=0.8'
      	  });
	      await page.goto('https://www.google.com/', {waitUntil: 'load'})
	      await page.screenshot({path: 'pic.png'});
	      await browser.close(); // <-- close browser after everything is done
   		} catch (error) {
      		console.log(error);
    	}
}

getPic();

Then i just get the error without any picture.

I should also add, that i was contacted by the guy who wrote the unhandledRejection for node and told me that i shouldn’t put it in my code. But wihtout it… it doesn’t work at all!

[knownasilya]

For anyone else having a similar issue, I solved it by adding a protocol (http://) to the url, otherwise it timesout when creating a pdf (but works with headless: false).

[flycatrix]

This #2504 (comment) does not work in my case. pptr 1.8.0 node 10.11.0 x64 Win7 x64

However if headless mode is disabled the code works fine.

I have the same problem, have you resolve it?