title: Sequelize. ERROR: null value in column "createdAt" violates not-null constraint
body: <p>I'm following the tutorial here: <a href="http://docs.sequelizejs.com/manual/tutorial/migrations.html#creating-first-model-and-migration-" rel="nofollow noreferrer">http://docs.sequelizejs.com/manual/tutorial/migrations.html#creating-first-model-and-migration-</a></p>
  
  <p>But when I do:</p>
  
  <p><code>node_modules/.bin/sequelize db:seed:all</code></p>
  
  <p>it gives to me:</p>
  
  <pre><code>ERROR: null value in column "createdAt" violates not-null constraint
  </code></pre>
  
  <p>I tested in a new <code>npm init</code> project with a new Postgres DB 10.4.</p>
  
  <p><strong>Dialect:</strong> postgres</p>
  
  <p><strong>Dialect version:</strong> "pg": "7.4.3",</p>
  
  <p><strong>Database version:</strong> 10.4</p>
  
  <p><strong>Sequelize version:</strong> "sequelize": "4.38.0"</p>
  
  <p>Maybe this is a way to go? <a href="http://mmiyauchi.com/?p=2057" rel="nofollow noreferrer">http://mmiyauchi.com/?p=2057</a></p>