更新

app-ghs/controllers/BookController.php

@@ -137,7 +137,7 @@ class BookController extends BaseController
     public function actionLsDetail()
     {
         $id = Yii::$app->request->get('id');
-        $data = book::$data;
+        $data = bookPfHd::$data;
 
         $bookTitleList = bookPfHd::$list;