Update Using-DevExtreme-In-ABP-Based-Application.md

docs/en/Community-Articles/2020-08-18-DevExtreme-With-ABP/Using-DevExtreme-In-ABP-Based-Application.md

@@ -191,6 +191,8 @@ Configure<AbpLayoutHookOptions>(options =>
 
 > If you are using ABP 3.1 version or more, you can skip this section.
 
+When you run your `*.Web` project, you will see an exception (`Uncaught TypeError: MutationObserver.observe: Argument 1 is not an object.`) at your console.
+
 This article is written in ABP Version 3.1 development cycle. We have fixed this issue [(ref)](https://github.com/abpframework/abp/issues/4566) in this development cycle.
 
 To fix that issue, download this file [abp.jquery.js](https://github.com/abpframework/abp/blob/dev/npm/packs/jquery/src/abp.jquery.js) and replace with `wwwroot / libs / abp / jquery / abp.jquery.js` file of your `*.Web` project.