プラグインのルーティングが読み込めない不具合を修正

src/Eccube/Kernel.php

@@ -201,7 +201,7 @@ protected function configureRoutes(RoutingConfigurator $routes)
         foreach ($plugins as $plugin) {
             $dir = $pluginDir.'/'.$plugin.'/Controller';
             if (file_exists($dir)) {
-                $builder = $routes->import($dir, '/', 'annotation');
+                $builder = $routes->import($dir,'annotation');
                 $builder->schemes($scheme);
             }
             if (file_exists($pluginDir.'/'.$plugin.'/Resource/config')) {