title: ERROR: must be superuser to alter superusers
body: <p>Unfortunately, I have removed super user privileges from postgres user in PostgreSQL. And currently I have not any super user in PostgreSQL. And i want to make superuser. So how can i make it ? Every time  I am trying to make postgres to super user. I am facing this problem. </p>
  
  <pre><code>Error : must be superuser to alter superusers.
  </code></pre>
  
  <p>Thanks in advance,</p>