IntelliSense does not work in gitpod theia, what is the solution?

IntelliSense does not work in gitpod theia, what is the solution?

We deployed a fix in the morning, please try again.

BTW Could you clarify why VS Code did not work for you?

Awesome, I successfully fixed the problem, thank you, and I hope you fix the other version problems
==> I mean Theia

Explain the problem in the video below