title: Could not bind TCP port 443 LetsEncrypt
body: <p>Could not bind TCP port 443 because it is already in use by another process on this system (such as a web server). Please stop the program in question and then try again</p>
  
  <p>My operating system is (include version): mac OS Sierra version 10.12</p>
  
  <p>My web server is (include version): apache2-mod-php7.0_7.0.15</p>
  
  <p>My hosting provider, if applicable, is: Linode (Ubuntu 16.04.1 LTS)</p>
  
  <p>I can login to a root shell on my machine (yes or no, or I don't know): not sure</p>
  
  <p>I'm using a control panel to manage my site (no, or provide the name and version of the control panel): I use terminal and filezilla</p>
  
  <p>Question is how do stop the program??? If any more details are required, let me know!</p>