Per below, I'm not sure how to troubleshoot this pretty simple usage scenario.
I have script (that I run about once a month) that functionally does the identical thing and which used to work as of a month ago.
I'd appreciate any pointers on places to start looking into why this does not work.
$ python3
Python 3.6.1 (default, Mar 23 2017, 16:49:06)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from selenium import webdriver
>>> from splinter import Browser
>>> chrome_options = webdriver.ChromeOptions()
>>> browser = Browser('chrome')
>>> browser.cookies.add({'aaa':'bbb'})
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/dummyuser/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/splinter/driver/webdriver/cookie_manager.py", line 28, in add
self.driver.add_cookie({'name': key, 'value': value})
File "/Users/dummyuser/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 708, in add_cookie
self.execute(Command.ADD_COOKIE, {'cookie': cookie_dict})
File "/Users/dummyuser/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 256, in execute
self.error_handler.check_response(response)
File "/Users/dummyuser/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unable to set cookie
(Session info: chrome=62.0.3202.94)
(Driver info: chromedriver=2.33.506106 (8a06c39c4582fbfbab6966dbb1c38a9173bfb1a2),platform=Mac OS X 10.13.1 x86_64)