I am using selenium with python and have downloaded the chromedriver for my windows computer from this site: http://chromedriver.storage.googleapis.com/index.html?path=2.15/
I had this problem on Webdriver 3.8.0 (Chrome 73.0.3683.103 and ChromeDriver 73.0.3683.68). The problem disappeared after I did
pip install -U selenium
to upgrade Webdriver to 3.14.1.