(unknown error: DevToolsActivePort file doesn't exist)

[11111022222]

I managed to fix it with --headless argument on ChromeOptions but i believe it's causing the authentication process to fail at https://m.facebook.com/.

Any other way to fix it?

root@vps717621:~/graph_me_fb/facebook-scraper# python make.py --index
Opening Browser...
Traceback (most recent call last):
  File "make.py", line 388, in <module>
    browser = start_browser()
  File "make.py", line 53, in start_browser
    browser = Chrome(options=options)
  File "/usr/lib/python3.6/site-packages/selenium/webdriver/chrome/webdriver.py", line 81, in __init__
    desired_capabilities=desired_capabilities)
  File "/usr/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally.
  (unknown error: DevToolsActivePort file doesn't exist)
  (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)

[jcontini]

Hi @vtroussel, I haven't come across this issue but there are some threads where others have solved this issue:

• https://stackoverflow.com/questions/50642308/webdriverexception-unknown-error-devtoolsactiveport-file-doesnt-exist-while-t
• DevToolsActivePort file doesn't exist. heroku/heroku-buildpack-google-chrome#46

My suggestion would be:

• Install the latest version of Chrome Beta - not the normal Chrome. This is because chromedriver-binary has to match the latest version of the beta
• Run pipenv install to make sure the latest chromedriver-binary is installed

If that doesn't work, you could try these lines (instead of --headless):

options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')

And finally if that doesn't work, you could try updating browser to Chrome('/path/to/your_chrome_driver_dir/chromedriver',options=chrome_options)

Let me know if any of these work for you, so we can find a way to prevent it from happening for others.

[11111022222]

I finally managed to make it work with :

options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')
options.add_argument('--headless')

[jcontini]

@vtroussel curious - did you have to do anything else to authentication to work headless? I tried those 3 lines, but it seems that authentication fails for me when I do

[11111022222]

@jcontini I modified the "ENTER" input as a button click. Also augmented the time.sleep but I don't think that is where the problem was coming from.

confirm_id = browser.find_element_by_name("login")
confirm_id.click()
time.sleep(4)

[jcontini]

Awesome, thank you @vtroussel ! This worked for me too. I've used this code to make it headless by default, and it seems to run faster. Appreciate you sharing this, let me know if any other ideas for improvements or feel free to do a pull request.