I'm trying to setup Selenium to run with a PHP binding. I keep getting this message:
PHP Fatal error: Uncaught Facebook\WebDriver\Exception\UnknownServerException:
The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver.
I get this when I do clean installs of Codeception, PHPUnit and Steward [re-installed the OS, re-installed each test suite according to instructions]. I used to be able to get Selenium2 going on Ubuntu. Since Selenium3 it doesn't seem to work. Any clues?