title: Unable to modify existing AWS RDS. Getting InvalidParameterCombination error
body: <p>I have an existing RDS in my account. I want to modify the RDS settings.
  But whenever I click on modify after selecting the DB, i get the following error.</p>
  
  <blockquote>
    <p>Cannot find version 8.0.11 for mysql (Service: AmazonRDS; Status Code: 400; Error Code: InvalidParameterCombination; Request ID: 4f73c65c-8bf9-4e3f-9fab-5b0c0940f09b)</p>
  </blockquote>
  
  <p>I have the <code>engine version as 8.0.11</code>. </p>
  
  <p>Any help on this would be highly appreciated.</p>
  
  <p>Thanks in Advance.</p>