title: tmux no server running on /private/tmp/tmux-502/default
body: <p>On macOS 10.12.1</p>
  
  <p>tmux 2.3</p>
  
  <p>When run:</p>
  
  <pre><code>tmux source-file ~/.tmux.conf
  </code></pre>
  
  <p>Got error:</p>
  
  <pre><code>no server running on /private/tmp/tmux-502/default
  </code></pre>