SQLSTATE[HY000] [1698] Access denied for user 'root'@'localhost'<br />
<b>Warning</b>:  Undefined variable $database in <b>/var/www/html/qapp/index.php</b> on line <b>11</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /var/www/html/qapp/index.php:11
Stack trace:
#0 {main}
  thrown in <b>/var/www/html/qapp/index.php</b> on line <b>11</b><br />