aspx intellisense not working. Tag Recommendation become <%@ %>. How to solve this?

I don't know what happens after i left my laptop for one week. My text editor does not show the html tag and other tag, just showing tags like in below. How can i get tag recommendation or intellisense back ? Thanks.

Solution

Having searched through the DevExpress support tickets, I assume that this is a problem in the newest VS 2019 (16.10) update:

T1003000 - IntelliSense works incorrectly in Visual Studio 2019 Version 16.10.0