title: '[onTurnError] unhandled error: TypeError: this.storage.read is not a function'
body: <p>Buiding a bot with Node and JavaScript and connecting to an Azure Blob Storage:</p>
  
  <pre class="lang-js prettyprint-override"><code>const { BlobStorage } = require('botbuilder-azure');
  var optionsBlob = {
      containerName: 'messages', 
      storageAccountOrConnectionString: &lt;secret&gt;
  };
  </code></pre>
  
  <p>Following the exact code from npm's <a href="https://www.npmjs.com/package/botbuilder-azure#use" rel="nofollow noreferrer">Basic Usage</a> and getting this error when I run <code>node start</code></p>
  
  <pre><code>[onTurnError] unhandled error: TypeError: this.storage.read is not a function
  </code></pre>
  
  <p>My dependencies are all installed:</p>
  
  <pre><code>"dependencies": {
      "botbuilder": "~4.6.2",
      "botbuilder-azure": "^4.6.2",
      "dotenv": "^8.2.0",
      "restify": "~8.4.0"
  },
  </code></pre>