title: RStudio Server Initialization Error: Status code 500 returned
body: <p>When I login to RStudio server installed as <a href="http://www.louisaslett.com/RStudio_AMI/" rel="nofollow noreferrer">an Amazon Machine Image</a>, I, I see the message "RStudio Server Initialization Error" and "Status code 500 returned," as in the screenshot. When I click OK, nothing changes.</p>
  
  <p><img src="https://i.stack.imgur.com/TLyNi.png" alt="enter image description here"></p>
  
  <p>What does this mean and how can I fix this?</p>