title: Sails grunt watch - Warning: Cannot read property 'bigint' of undefined Use --force to continue
body: <p>I run sails on current project, just copied current project to new macbook high sierra and suddenly shown this error when running task grunt and edit asset files.</p>
  
  <p>Sails version: 1.0.2</p>
  
  <p>Grunt-cli version: 1.2.0</p>
  
  <p>Grunt version: 1.0.3</p>
  
  <p>Npm vesion: 6.1.0</p>
  
  <pre><code>Running "watch" task
  Waiting...
  &gt;&gt; File "assets/styles/project/_colors.scss" changed.
  Running "less:dev" (less) task
  &gt;&gt; 1 stylesheet created.
  
  Running "sass:dev" (sass) task
  
  Running "sync:dev" (sync) task
  **Warning: Cannot read property 'bigint' of undefined Use --force to continue.**
  </code></pre>
  
  <p>When i run trace for this problem will show this</p>
  
  <pre><code>Warning: Cannot read property 'bigint' of undefined Use --force to continue.
  TypeError: Cannot read property 'bigint' of undefined
    at Object.stat (fs.js:795:37)
    at Object.stat (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/sails-hook-grunt/node_modules/promised-io/promise.js:709:17)
    at processPair (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/sails-hook-grunt/node_modules/grunt-sync/tasks/sync.js:143:28)
    at /Users/erwinsetiawan/Works/Project/review-portal/node_modules/sails-hook-grunt/node_modules/grunt-sync/tasks/sync.js:52:16
    at Array.map (&lt;anonymous&gt;:null:null)
    at Object.&lt;anonymous&gt; (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/sails-hook-grunt/node_modules/grunt-sync/tasks/sync.js:37:38)
    at Array.map (&lt;anonymous&gt;:null:null)
    at Object.&lt;anonymous&gt; (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/sails-hook-grunt/node_modules/grunt-sync/tasks/sync.js:29:28)
    at Object.&lt;anonymous&gt; (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/grunt/task.js:252:15)
    at Object.thisTask.fn (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/grunt/task.js:70:16)
    at Object.&lt;anonymous&gt; (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/util/task.js:294:30)
    at Task.runTaskFn (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/util/task.js:244:24)
    at Task.&lt;anonymous&gt; (/Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/util/task.js:293:12)
    at /Users/erwinsetiawan/Works/Project/review-portal/node_modules/grunt/lib/util/task.js:220:11
    at process._tickCallback (internal/process/next_tick.js:61:11)
  </code></pre>
  
  <p>It nothing happen when run this project to another laptop old el capitan and windows</p>
  
  <p>Anyone can help me to solve di problem?</p>