selenium.common.exceptions.SessionNotCreatedException: Message: session not created from tab crashed using ChromeDriver Chrome Selenium Python

Question

I am having this error apparently when trying to access a url that the script requests, does not have a specific. I don\'t understand exactly why this error, but I want to t

Answer 1

This error message...

  selenium.common.exceptions.SessionNotCreatedException: Message: session not created
  from tab crashed
(Session info: headless chrome=78.0.3904.108)

...implies that the ChromeDriver was unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.

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Analysis and Solution

There are diverse solution to this issue. However as per UnknownError: session deleted because of page crash from tab crashed this issue can be solved by either of the following solutions:

• Add the following chrome_options:

  chrome_options.add_argument('--no-sandbox')         
  

• Another option to make it work would be to add the chrome_options as --disable-dev-shm-usage. This will force Chrome to use the /tmp directory instead. This may slow down the execution though since disk will be used instead of memory.

  chrome_options.add_argument('--disable-dev-shm-usage')
  

• So effectively, you code block will be:

  from bs4 import BeautifulSoup
  from selenium import webdriver
  from selenium.webdriver.chrome.options import Options
  
  chrome_options = Options()
  chrome_options.add_argument('--no-sandbox')
  chrome_options.add_argument('--ignore-certificate-errors')
  chrome_options.add_argument('--headless')
  chrome_options.add_argument('--disable-dev-shm-usage')
  driver = webdriver.Chrome(executable_path='/driver/chromedriver', options=chrome_options)
  

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from tab crashed

from tab crashed was WIP(Work In Progress) with the Chromium Team for quite some time now which relates to Linux attempting to always use /dev/shm for non-executable memory. Here are the references :

• Linux: Chrome/Chromium SIGBUS/Aw, Snap! on small /dev/shm
• Chrome crashes/fails to load when /dev/shm is too small, and location can't be overridden
• As per Comment61#Issue 736452 the fix seems to be have landed with Chrome v65.0.3299.6

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Reference

You can find a detailed discussion in unknown error: session deleted because of page crash from unknown error: cannot determine loading status from tab crashed with ChromeDriver Selenium