change

biz-ghs/book/classes/BookCustomCgClass.php

@@ -10,6 +10,6 @@ use Yii;
 class BookCustomCgClass extends BaseClass
 {
 
-    public static $baseFile = '\bizGhs\book\models\BookCustomCg';
+    public static $baseFile = '\bizGhs\book\models\BookCustomCgChange';
 
 }