PDO FAIL : SQLSTATE[HY000] [1040] Too many connections

En cours : 
PDOException Object
(
    [message:protected] => SQLSTATE[HY000] [1040] Too many connections
    [string:Exception:private] => 
    [code:protected] => 1040
    [file:protected] => /var/www/vhosts/golf-luchon.net/new/core/sqlDB.class.php
    [line:protected] => 127
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /var/www/vhosts/golf-luchon.net/new/core/sqlDB.class.php
                    [line] => 127
                    [function] => __construct
                    [class] => PDO
                    [type] => ->
                    [args] => Array
                        (
                            [0] => mysql:dbname=golfluchon_dev;host=localhost
                            [1] => golfluchon
                            [2] => uu49V%f87cWzr36#
                        )

                )

            [1] => Array
                (
                    [file] => /var/www/vhosts/golf-luchon.net/new/core/modulo.class.php
                    [line] => 219
                    [function] => __construct
                    [class] => sqlDB
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [2] => Array
                (
                    [file] => /var/www/vhosts/golf-luchon.net/new/includes/headers.php
                    [line] => 8
                    [function] => __construct
                    [class] => Modulo
                    [type] => ->
                    [args] => Array
                        (
                        )

                )

            [3] => Array
                (
                    [file] => /var/www/vhosts/golf-luchon.net/new/index.php
                    [line] => 2
                    [args] => Array
                        (
                            [0] => /var/www/vhosts/golf-luchon.net/new/includes/headers.php
                        )

                    [function] => include
                )

        )

    [previous:Exception:private] => 
    [errorInfo] => 
)

 Contexte : 
sqlDB Object
(
    [_config:sqlDB:private] => Array
        (
            [user] => golfluchon
            [pwd] => uu49V%f87cWzr36#
            [db_name] => golfluchon_dev
            [server] => localhost
            [type_db] => mysql
        )

    [_pdo:sqlDB:private] => 1
    [_handler:sqlDB:private] => 
    [_res:sqlDB:private] => 
    [_req] => 
    [_fetched:sqlDB:private] => 
    [_curr_line:sqlDB:private] => 0
    [_error:sqlDB:private] => errorClass Object
        (
            [_fichier:errorClass:private] => /var/www/vhosts/golf-luchon.net/new/core/sqlDB.class.php
            [_ligne:errorClass:private] => 132
            [_objContext:errorClass:private] => sqlDB Object
 *RECURSION*
            [_message:errorClass:private] => 
        )

)

 Dans : /var/www/vhosts/golf-luchon.net/new/core/sqlDB.class.php:132
Erreur de connexion à la BDD
Fatal error: Call to a member function query() on boolean in /var/www/vhosts/golf-luchon.net/new/core/sqlDB.class.php on line 196