Sass errors break rerunning Butler

[patrickfweston]

When you encounter certain Sass errors, Butler is halted. Rerunning Butler throws an error because the port (8000) is occupied. I believe the former process never lets go of the port.

The only fix so far is restarting Vagrant and then running Butler.

Error thrown when trying to rerun Butler:

events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: Command failed: /bin/sh -c ../../vendor/bin/sculpin generate --watch --server --project-dir="../../styleguide/"


  [React\Socket\ConnectionException]                            
  Could not bind to tcp://0.0.0.0:8000: Address already in use  

[patrickfweston]

To get around the problem:

• Run ps -fC php to find the PID of the running process
• Run kill <pid> using the PID from the previous step