Can't open browser with Selenium after Firefox update

Question

I use Selenium WebDriver on Ubuntu Desktop 16.04, and I can\'t open browser. I get the following error after Firefox update (before this, it all worked):

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Answer 1

Some people have the problem that some buttons or select boxes cannot be selected inmarionette modus.

An alternative is using older firefox version:

You can download the binary here and use it here:

from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary

binary = FirefoxBinary('path/to/binary')
driver = webdriver.Firefox(firefox_binary=binary)