title: A Colon cannot be used in an unquoted value Error in security.yml
body: <p>i work on symfony project and try to make command <code>php bin/console server:run</code> but i get this error:
  <code>A colon cannot be used in an unquoted mapping value at line 33 (near " anonymous:  true").</code></p>
  
  <p>The problem become from this file: </p>
  
  <p><a href="https://i.stack.imgur.com/nkbD4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nkbD4.png" alt="enter image description here"></a></p>
  
  <p>What is wrong with file indentation ? </p>