Connection failed: SQLSTATE[HY000] [2002] Connection refused  <br />
<b>Warning</b>:  session_start(): Session cannot be started after headers have already been sent in <b>/app/csrf.php</b> on line <b>4</b><br />
 <br />
<b>Warning</b>:  Undefined variable $pdo in <b>/app/index.php</b> on line <b>13</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function query() on null in /app/index.php:13
Stack trace:
#0 {main}
  thrown in <b>/app/index.php</b> on line <b>13</b><br />