Cannot launch perspective view

Hello All,
I have a problem to launch perspective view from web page, it can be switch between design mode and preview mode, but if I tried to use “Launch Perspective\Launch Session”, there was not my view page on web, only display “Home” page with:
Welcome to Perspective!
The skeleton project is intended to help you get started with Perspective. The project is designed to be mobile-responsive and fully utilizes styles. Feel free to modify as desired.
Please advise what is the problem?
My Java Version: 11.0.7+10-LTS