fix

src/Console/stubs/extension/extension.stub

@@ -12,8 +12,6 @@ class :class_name extends Extension
 
     protected $composer = __DIR__.'/../composer.json';
 
-    protected $configs = __DIR__.'/../config';
-
     protected $assets = __DIR__.'/../resources/assets';
 
     protected $views = __DIR__.'/../resources/views';

src/Controllers/ExtensionController.php

@@ -218,7 +218,7 @@ class ExtensionController extends Controller
                 return "<label class='label label-default'>$text</label>";
             }
 
-            return "<label class='label label-success'>{$this->imported_at}</label>";
+            return $this->imported_at;
         };
 
         Grid\Column::define('name', $name);