Prooph\EventStore\Exception\ConfigurationException::configurationError PHP Méthode

    public static function configurationError($msg)
    {
        return new self('[Configuration Error] ' . $msg . "\n");
    }

 /**
  * @param ContainerInterface $container
  * @return EventStore
  */
 public function __invoke(ContainerInterface $container)
 {
     $config = $container->get('config');
     if (!isset($config['prooph'])) {
         throw ConfigurationException::configurationError('Missing prooph config key in application config');
     }
     if (!isset($config['prooph']['event_store'])) {
         throw ConfigurationException::configurationError('Missing key event_store in prooph configuration');
     }
     $config = $config['prooph']['event_store'];
     if (!isset($config['adapter']['type'])) {
         throw ConfigurationException::configurationError(sprintf('Event store adapter is missing in configuration'));
     }
     $adapter = $container->get($config['adapter']['type']);
     if (!isset($config['event_emitter'])) {
         $eventEmitter = new ProophActionEventEmitter();
     } else {
         $eventEmitter = $container->get($config['event_emitter']);
     }
     $eventStore = new EventStore($adapter, $eventEmitter);
     $plugins = isset($config['plugins']) ? $config['plugins'] : [];
     foreach ($plugins as $pluginAlias) {
         $plugin = $container->get($pluginAlias);
         if (!$plugin instanceof Plugin) {
             throw ConfigurationException::configurationError(sprintf('Plugin %s does not implement the Plugin interface', $pluginAlias));
         }
         $plugin->setUp($eventStore);
     }
     return $eventStore;
 }