added a more specialized exception for a better error message

Author: fabpot

RouteCollectionBuilder.php

@@ -369,11 +369,11 @@ private function load($resource, $type = null)
         }
 
         if (null === $resolver = $this->loader->getResolver()) {
-            throw new FileLoaderLoadException($resource);
+            throw new FileLoaderLoadException($resource, null, null, null, $type);
         }
 
         if (false === $loader = $resolver->resolve($resource, $type)) {
-            throw new FileLoaderLoadException($resource);
+            throw new FileLoaderLoadException($resource, null, null, null, $type);
         }
 
         $collections = $loader->load($resource, $type);