selenium.common.exceptions.WebDriverException：消息：使用 find_element_by_id Selenium 和 ChromeDriver 时出现 chrome 无法访问错误

Question

Here is the html code:

< input class="form-control input-lg input auto-complete" id="ymMsgInput" type="text" placeholder="Type your message ..." autocomplete="off" >

Code:

i = s.find_element_by_id("ymMsgInput");

Python - Selenium Chrome webdriver error:

Traceback (most recent call last):
  File "<pyshell#19>", line 1, in <module>
    i = s.find_element_by_id("ymMsgInput");
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 351, in find_element_by_id
    return self.find_element(by=By.ID, value=id_)
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 955, in find_element
    'value': value})['value']
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 312, in execute
    self.error_handler.check_response(response)
  File "C:\Users\vishn\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: chrome not reachable
  (Session info: chrome=65.0.3325.146)
  (Driver info: chromedriver=2.36.540470 (e522d04694c7ebea4ba8821272dbef4f9b818c91),platform=Windows NT 10.0.16299 x86_64)

Answer 1

The error says it all :

    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: chrome not reachable

This error is observed in case of version compatibility between the binaries which an user uses but definitely this is not your case as you are :

• Using chromedriver=2.36
• Using chrome=65.0

• Selenium version unknown

  Release Notes of chromedriver=2.36 clearly mentions :

  Supports Chrome v65-66

But, since the release of the latest Chromedriver 2.36 Selenium users had been facing issues with it. Here is one of the threads :

• We released the latest Chromedriver 2.36

The root cause is related to the commit regarding :

• Remove --disable-infobars

  So, a couple of possible solution will be to :

• To use ChromeOptions Class to maximize the browser.

• Remove the option disable-infobars

• An example :

   from selenium import webdriver from selenium.webdriver.chrome.options import Options options = Options() options.add_argument("start-maximized") driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\\path\\to\\chromedriver.exe') driver.get('https://www.google.co.in') print("Page Title is : %s" %driver.title)

If your issue still persists consider the following :

• Upgrade Selenium Python Client to current levels Version 3.10.0 .
• Upgrade ChromeDriver to stable ChromeDriver v2.35 level.
• Keep Chrome version at Chrome v64.x levels. ( as per ChromeDriver v2.35 release notes )
• Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
• Use CCleaner tool to wipe off all the OS chores before and after the execution of your test Suite .
• If your base Chrome version is too old, then uninstall it through Revo Uninstaller and install a recent GA and released version of Chrome.
• Execute your Test .

Answer 2

Your exception is not about finding an element. Selenium is not able to contact Chrome. You can do couple of things.

1. Downgrade/upgrade your chromedriver based on your selenium version.

2. Pass --no-sandbox to chrome options.

    chrome_options.add_argument('--no-sandbox') chrome = webdriver.Chrome('/usr/local/bin/chromedriver', chrome_options=chrome_options)

Answer 3

In addition to the version issues mentioned above (eg, pip uninstall chromedriver-binary and re-install a different version with pip install chromedriver-binary==104.0.5112.20, for example):

Leave the browser window open after running 'driver = webdriver.Chrome()' in Python. Closing it will interfere with subsequent lines using driver.get().

Answer 4

As I found out it could also be the settings or the launch itself of a VPN. Please make sure to check if the same problem occurs without browsing through VPN.