Links to docs I have viewed

https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY...
https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY...
https://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY...

Even though I use Cache I still looked at IRIS doc

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

This is the error I am getting

And this is the view details

This is the Visual Studio

And this is the Cache Version

Cache' Studio Client  2018.1.2 Build 309 Patch 5
Server Cache for Windows (x86-64) 2018.1.2 (Build 309_5)