[SensioLabsInsight] Dependencies not installable

Bonjour,

Je suis entrain de développer une application web sous symfony 3.2.2

Je suis entrain de passer mon application sous SensioLabsInsight pour valider mon application et j'ai une bien belle erreur de type critical que je n'arrive pas à résoudre :

SensioLabsInsight was not able to install your Composer dependencies. If you need to customize files or run commands to make it work, you can edit your SensioLabsInsight project configuration to override the default "pre_composer_script" and/or "post_composer_script" settings.

Voici mon fichier composer.json

{
    "description": "XXXXX",
    "name": "XXXXX",
    "license": "proprietary",
    "type": "project",
    "autoload": {
        "psr-4": {
            "": "src/"
        },
        "classmap": [
            "app/AppKernel.php",
            "app/AppCache.php"
        ]
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "require": {
        "php": ">=5.5.9",
        "twig/twig": "~1.28",
        "symfony/symfony": "3.2.*",
        "doctrine/orm": "^2.5",
        "doctrine/doctrine-bundle": "^1.6",
        "doctrine/doctrine-cache-bundle": "^1.2",
        "symfony/swiftmailer-bundle": "^2.3.10",
        "symfony/monolog-bundle": "^3.0.2",
        "symfony/polyfill-apcu": "^1.0",
        "sensio/distribution-bundle": "^5.0",
        "sensio/framework-extra-bundle": "^3.0.2",
        "incenteev/composer-parameter-handler": "^2.0",

        "doctrine/doctrine-fixtures-bundle": "2.3.0",

        "friendsofSymfony/rest-bundle": "2.1.1",
        "friendsofsymfony/elastica-bundle": "3.2.2",

        "willdurand/hateoas-bundle": "^1.0",
        "knplabs/knp-paginator-bundle": "2.5.3",
        "jms/serializer-bundle": "1.1.0",
        "symfony/assetic-bundle": "^2.8",
        "friendsofsymfony/user-bundle": "~2.0@dev"
    },
    "require-dev": {
        "sensio/generator-bundle": "^3.0",
        "symfony/phpunit-bridge": "^3.0"
    },
    "scripts": {
        "symfony-scripts": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
            "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
        ],
        "post-install-cmd": [
            "@symfony-scripts"
        ],
        "post-update-cmd": [
            "@symfony-scripts"
        ]
    },
    "extra": {
        "symfony-app-dir": "app",
        "symfony-bin-dir": "bin",
        "symfony-var-dir": "var",
        "symfony-web-dir": "web",
        "symfony-tests-dir": "tests",
        "symfony-assets-install": "relative",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml"
        },
        "branch-alias": null
    }
}

L'erreur provient lors de l'éxécution des scripts une fois la mise à jour des paquets terminée.
Le script qui plante est celui-ci ;
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache"

Insights me dit comme erreur :

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Nothing to install or update
Generating optimized autoload files
> Incenteev\ParameterHandler\ScriptHandler::buildParameters
Creating the "app/config/parameters.yml" file
> Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::buildBootstrap
> Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache

  [Doctrine\DBAL\Exception\ConnectionException]                              
  An exception occured in driver: SQLSTATE[HY000] [2002] Connection refused  

  [Doctrine\DBAL\Driver\PDOException]        
  SQLSTATE[HY000] [2002] Connection refused  

  [PDOException]                             
  SQLSTATE[HY000] [2002] Connection refused  

Script Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache handling the symfony-scripts event terminated with an exception

  [RuntimeException]                                                             
  An error occurred when executing the "'cache:clear --no-warmup'" command:      

    [Doctrine\DBAL\Exception\ConnectionException]                                
    An exception occured in driver: SQLSTATE[HY000] [2002] Connection refused    

    [Doctrine\DBAL\Driver\PDOException]                                          
    SQLSTATE[HY000] [2002] Connection refused                                    

    [PDOException]                                                               
    SQLSTATE[HY000] [2002] Connection refused                                    

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--] [<packages>]...

Des idées ? Je ne comprends pas pourquoi insight à besoin de se connecter à la base de données pour pouvoir effectuer un clear:cache.

Merci