How to import Connectkit_nrf52840 into VS code build configuration

[sctung-gmail]

Hi,
I am create a project and want to build it in connectkit_nrf5280 board. But running into some build issue. Shown as the following image.
I git clone the repo the entire nrf52840-connectkit into my local drive, and copy /board/arm/connectkit_nrf52840 folder into ncs/v3.1.0/zephyr/board folder. So the VS code is able to find the board. But it runs into some build issue when "generate and build".

Please help.

Thank you

Jason