title: How to resolve this error "DatabaseConnectionNotDefinedException" on Drupal 7
body: <p>When setup Drupal 7.26 I got this error :</p>
  
  <pre><code>DatabaseConnectionNotDefinedException: The specified database connection is not defined: default in Database::openConnection() (line 1675 of /Library/WebServer/Documents/drupal7/includes/database/database.inc).
  </code></pre>
  
  <p>Does anyone know how to fix this ?</p>
  
  <p>Thanks</p>