title: Why does Gerrit review return a "not a valid patch set" error?
body: <p>I am referring to this <a href="https://gerrit-review.googlesource.com/Documentation/cmd-review.html" rel="nofollow noreferrer">document</a> in order to post ratings to Gerrit server.  </p>
  
  <p>However, i face some error while running the following command:</p>
  
  <pre><code> ssh -p &lt;port&gt; &lt;gerrit host&gt; gerrit review Ibaabcd10fcf35182f592806c67077a2e72d72727,51 --message 'Build Successful' --code-review +1
  </code></pre>
  
  <p>Error:</p>
  
  <pre><code>fatal: "Ibaabcd10fcf35182f592806c67077a2e72d72727,51" is not a valid patch set
  </code></pre>
  
  <p>Does anyone know how to fix this?
  Thanks in advance</p>