This function will throw an error if webdriver(phantomjs) cannot be found, or cannot be started.
It works with a timeout of five seconds.
If you got the forllwing error, this means that your operating system or antivirus
is bloking the webdriver (phantom.js) process, try to disable your antivirus temporarily or
adjust your system configuration to allow phantomjs and processx executable (browser_path
to know where phantomjs is located).
Error in supervisor_start() : processx supervisor was not ready after 5 seconds.