Message : 
```php
Zend\ServiceManager\ServiceManager::get was unable to fetch or create an instance for zf2_laboratory_doctrine_em
```

Stack trace :+1:
```php
#0 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\ServiceManager\AbstractPluginManager.php(103): Zend\ServiceManager\ServiceManager->get('zf2_laboratory_...', false)
#1 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\Mvc\Controller\ControllerManager.php(120): Zend\ServiceManager\AbstractPluginManager->get('zf2_laboratory_...', Array, false)
#2 G:\git\DoctrineModule\src\DoctrineModule\Service\ObjectManagerInitializer.php(81): Zend\Mvc\Controller\ControllerManager->get('zf2_laboratory_...')
#3 G:\git\DoctrineModule\src\DoctrineModule\Service\ObjectManagerInitializer.php(64): DoctrineModule\Service\ObjectManagerInitializer->getObjectManager(Object(Zend\Mvc\Controller\ControllerManager))
#4 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\ServiceManager\ServiceManager.php(515): DoctrineModule\Service\ObjectManagerInitializer->initialize(Object(Application\Controller\IndexController), Object(Zend\Mvc\Controller\ControllerManager))
#5 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\ServiceManager\ServiceManager.php(441): Zend\ServiceManager\ServiceManager->create(Array)
#6 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\ServiceManager\AbstractPluginManager.php(103): Zend\ServiceManager\ServiceManager->get('Application\Con...', false)
#7 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\Mvc\Controller\ControllerManager.php(120): Zend\ServiceManager\AbstractPluginManager->get('Application\Con...', Array, false)
#8 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\Mvc\DispatchListener.php(97): Zend\Mvc\Controller\ControllerManager->get('Application\Con...')
#9 [internal function]: Zend\Mvc\DispatchListener->onDispatch(Object(Zend\Mvc\MvcEvent))
#10 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\EventManager\EventManager.php(460): call_user_func(Array, Object(Zend\Mvc\MvcEvent))
#11 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\EventManager\EventManager.php(204): Zend\EventManager\EventManager->triggerListeners('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#12 G:\www\laboratory\zf2-laboratory\vendor\zendframework\zendframework\library\Zend\Mvc\Application.php(295): Zend\EventManager\EventManager->trigger('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure))
#13 G:\www\laboratory\zf2-laboratory\public\index.php(13): Zend\Mvc\Application->run()
#14 {main}```