title: Selenium remote webdriver error (Connection refused)
body: <pre><code>from selenium import webdriver
  import sys
  import os
  cwd = os.getcwd()
  driver= webdriver.Remote(desired_capabilities=webdriver.DesiredCapabilities.CHROME,command_executor='http://127.0.0.1:4444')
  driver.get('http://www.google.com')
  </code></pre>
  
  <p>error:</p>
  
  <pre><code>urllib.error.URLError: &lt;urlopen error [Errno 61] Connection refused&gt;
  </code></pre>
  
  <p>this program works a while ago, but now it does not. this is why I think it is a system error. (OSX 10.13.4)</p>