I am a Windows 10 Python user. I use the most recent Python version from JetBrain (PyCharm) Until recently my code had no problem with the webdriver.send_keys command.

I have recently tried to use the latest version of both, the Chrome browser and chromedriver (2.39) With those "improvements" the driver's send_keys function suddenly started failing (regardless of the browser i was using - EDGE, Firefox, Chrome...)

I am getting the following error:

unknown error: call function result missing 'value' (Session info:
chrome=67.0.3396.62) (Driver info: chromedriver=2.30.477700
0057494ad8732195794a7b32078424f92a5fce41),platform=Windows NT
10.0.17134 x86_64)

2 Answers 2


If you are using latest chrome you have to use latest selenium driver which is something around 3.12.XX. Try to setup the chrome driver and chrome on the list.

Compatibility between Selenium WebDriver and the major web browsers


You will need to update your chrome version, to check out the chromedriver compatibility with your chrome version check this LINK

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