Timeout exception while waiting for webpage with element in headless chrome

[Rajesh Singh]

Following code uses non-headless chrome and it works:

import os
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait


chrome_options = Options()
chrome_options.add_argument("--headless")
chrome_options.add_argument('--start-maximized')
chrome_options.binary_location = 'C:\Program Files (x86)\Google\Chrome\Application\chrome.exe'

driver = webdriver.Chrome(executable_path=os.path.abspath("C:\User\Program Files\chrome-driver\chromedriver.exe"))

driver.set_window_size(1200, 600) 

driver.get("login-url")
driver.find_element_by_id("loginId").send_keys("uname")
driver.find_element_by_id("newPassword").send_keys("pwd")
driver.find_element_by_name("submit-button").click()
driver.set_window_size(1200, 800)
WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID,"user-info")))

v = driver.find_element_by_xpath("//tr[4]/td[5]/span").text

print(v)

When I choose to use headless chrome:

driver = webdriver.Chrome(executable_path=os.path.abspath("C:\User\Program Files\chrome-driver\chromedriver.exe"), chrome_options=chrome_options)

It throws following exception:

Traceback (most recent call last):
  File "C:/User/workspaces/pyworkspaces/fin2/venv/process.py", line 28, in <module>
    WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID,"user-info")))
  File "C:\User\workspaces\pyworkspaces\fin2\venv\lib\site-packages\selenium\webdriver\support\wait.py", line 80, in until
    raise TimeoutException(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: 

So it seems to fail on following line, in headless chrome:

WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.ID,"user-info")))

I also tried presence_of_element_located:

WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID,"user-info")))

But it still gives TimeOutException. Why is it so?

Environment

Running chromedriver from command prompt says version 75.0.3770.90.
Chrome is also of exact same version: Version 75.0.3770.100 (Official Build) (64-bit)
Windows 10 64 bit
Python console of PyCharm shows this: Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 21:26:53) [MSC v.1916 32 bit (Intel)] on win32

[Ab Dul]

Hi Raj ,

Any luck with this issue ?? I think I face similar issue, any help would be great!

[Dhrumil Pathak]

I am also facing  the same issue, can any one help on this ? 

[Arvind Sah]

Hi Dhrumil,

When we try to run the non-headless chrome instance on windows machine (VM's) the default browser size when maximized is different as compare headless chrome instance.

I would recommend printing the window size after setting the window size in both cases of headless/normal mode. I am sure you will be able to figure out the issue. 

//Command to print the window size in JAVA

getDriver().manage().window().getSize();

Thanks and Regards,

Arvind Sah

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