title: i3 won't load layout (parse error: client cancelled parse via callback return value)
body: <p>I saved the layout for my workspace and tried to load it following the docs:</p>
  
  <pre><code>i3-save-tree --workspace 1 &gt;   /home/goldenoctopus/custom_system_files/workspace-1.json
  </code></pre>
  
  <p>and:</p>
  
  <pre><code>i3-msg "workspace 1; append_layout /home/goldenoctopus/custom_system_files/workspace-1.json"
  </code></pre>
  
  <p>But the command have no effect and just return the following error:</p>
  
  <pre><code>    ERROR: Your command: (null)
      ERROR:               (null)
      ERROR: parse error: client cancelled parse via callback return value
                                     }                             ]
                   (right here) ------^
  
      [{"success":true},{"success":false,"error":"parse error: client cancelled parse via callback return value\n                                        }                             ]\n                     (right here) ------^\n"}]
  </code></pre>