updated depency libaries

libs/Symfony/Component/EventDispatcher/GenericEvent.php

@@ -71,7 +71,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
             return $this->arguments[$key];
         }
 
-        throw new \InvalidArgumentException(sprintf('%s not found in %s', $key, $this->getName()));
+        throw new \InvalidArgumentException(sprintf('Argument "%s" not found.', $key));
     }
 
     /**