How to connect to database Openshift with Silex

I want to connect my silex Application to my Database with Openshift,

So i have these lines in my file bootstrap.php

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  • define('DB_HOST', getenv('OPENSHIFT_MYSQL_DB_HOST'));
    define('DB_PORT', getenv('OPENSHIFT_MYSQL_DB_PORT'));
    define('DB_USER', getenv('OPENSHIFT_MYSQL_DB_USERNAME'));
    define('DB_PASS', getenv('OPENSHIFT_MYSQL_DB_PASSWORD'));
    define('DB_NAME', getenv('OPENSHIFT_GEAR_NAME'));
    
    App::$app->register(new Silex\Provider\DoctrineServiceProvider(), array(
        'db.options' => array(
            'driver' => 'pdo_mysql',
            'host' => constant("DB_HOST"),
            'dbname' => constant("DB_NAME"),
            'user' => constant("DB_USER"),
            'password' => constant("DB_PASS"),
            'port' => constant("DB_PORT"),
        ),
    ));
    

    I call several working services

    And the website work in Local (with local connection)

    When i push with git i have this error in my logs (when i update the website) :

    [Mon Dec 22 08:10:17 2014] [error] [client 127.12.51.129] PHP Fatal error:  Clas
    s 'Doctrine\\DBAL\\Configuration' not found in /var/lib/openshift/548b027efcf933
    a1dd0000fe/app-root/runtime/repo/vendor/silex/silex/src/Silex/Provider/DoctrineS
    erviceProvider.php on line 90
    

    Thanks for your help.

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