Fixes #3088: The debug and gii modules will manage their own URL rules now

extensions/debug/Module.php

@@ -117,6 +117,13 @@ class Module extends \yii\base\Module implements BootstrapInterface
         $app->on(Application::EVENT_BEFORE_REQUEST, function () use ($app) {
             $app->getView()->on(View::EVENT_END_BODY, [$this, 'renderToolbar']);
         });
+
+        $app->getUrlManager()->addRules(
+            [
+                $this->id => $this->id,
+                $this->id . '/<controller:\w+>/<action:\w+>' => $this->id . '/<controller>/<action>',
+            ]
+        );
     }
 
     /**