Selenium unexpectedly having issues

Question

I have been using selenium now for a while on a number of projects.

With code that was running I am now receiving the following error:

    C:\Users\%USER%\Miniconda\python.exe C:/Users/%USER%/PycharmProjects/c_r/quick_debug.py
    Traceback (most recent call last):
      File "C:/Users/%USER%/PycharmProjects/c_r/quick_debug.py", line 17, in <module>
        c.setUp()
      File "C:\Users\%USER%\PycharmProjects\c_r\c.py", line 40, in setUp
        self.driver = webdriver.Chrome()
      File "C:\Users\%USER%\Miniconda\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 67, in __init__
        desired_capabilities=desired_capabilities)
      File "C:\Users\%USER%\Miniconda\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 87, in __init__
        self.start_session(desired_capabilities, browser_profile)
      File "C:\Users\%USER%\Miniconda\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 141, in start_session
        'desiredCapabilities': desired_capabilities,
      File "C:\Users\%USER%\Miniconda\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 201, in execute
        self.error_handler.check_response(response)
      File "C:\Users\%USER%\Miniconda\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 181, in check_response
        raise exception_class(message, screen, stacktrace)
    selenium.common.exceptions.WebDriverException: Message: unknown error: unrecognized Blink revision: 3b3c00f2d95c45cca18ab944acced413fb759311
      (Driver info: chromedriver=2.10.267521,platform=Windows NT 6.3 x86_64)


    Process finished with exit code 1

where c.setUp() is:

def setUp(self):
   self.driver = webdriver.Chrome()

Again - this is code that WAS running and I am unsure how to this "Unrecognized blink revision" error.

Nothing has consciously changed.

Thank you for any pointers

Answer 1

After having a quick look at the source code, I think this is a compatibility issue between ChromeDriver and Chrome itself - I suspect your Chrome auto-updated and now is too new for ChromeDriver 2.10.

In other words: update ChromeDriver, latest is currently 2.19.