fix

Author: myzero1

src/Module.php

@@ -30,6 +30,13 @@ public function init()
             // 'baseUrl' => '@web/themes/adminlte',
         ]);
 
+        if ($this->theme == 'adminlteiframe') {
+            $this->defaultRoute = 'adminlteiframe/layout'; // for adminlteiframe theme
+            $this->controllerMap['adminlteiframe'] = [ // for adminlteiframe theme
+                'class' => 'myzero1\adminlteiframe\controllers\SiteController'
+            ];
+        }
+
         // \Yii::$app->layoutPath = '@vendor/myzero1/yii2-theme-adminlteiframe/src/views/'.$this->theme.'/layouts';
         // \Yii::$app->layout = 'main'; // default
 

src/controllers/DefaultController.php

@@ -15,12 +15,7 @@ class DefaultController extends Controller
      */
     public function actionIndex()
     {
-        // $this->layout = 'layout'; // using the view of module
-        if ($this->module->theme == 'adminlteiframe') {
-            $this->layout = '//layout'; // using the view of app
-        }
         return $this->render('index'); // using the view of module
-        // return $this->render('//index');  // using the view of app
     }
 
     /**