SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES)<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in D:\xampp\htdocs\incendios\clases\pdo_mysql.class.php:66
Stack trace:
#0 D:\xampp\htdocs\incendios\include\funciones.php(52): PDO_mysql-&gt;exec_query('UPDATE contador...')
#1 D:\xampp\htdocs\incendios\index.php(33): get_numero_visitante(Object(PDO_mysql))
#2 {main}
  thrown in <b>D:\xampp\htdocs\incendios\clases\pdo_mysql.class.php</b> on line <b>66</b><br />