title: AWS Javascript SDK -IncompleteSignatureException
body: <pre><code>const Polly = new AWS.Polly({
    accessKeyId: 'part1/part2',
    secretAccessKey: 'KEY',
    region: 'eu-central-1',
  });
  
  Polly.describeVoices(...)
  </code></pre>
  
  <p>And result is</p>
  
  <blockquote>
    <p>IncompleteSignatureException: Credential must have exactly 5 slash-delimited elements</p>
  </blockquote>
  
  <p>I count 6 slash-delimited elements, but my accessKeyId includes slash key.</p>
  
  <p>How I can check my key or problem in another place?</p>