How to run in fork

[keiyu-lab]

I need to add new features to this gird, so I want to customize it by forking it.
How can I debug it after forking?
because I am encountering an error message "cannot access reactgrid before initialization" when I run $npm start.
I am new so I much appreciate your help

[qiufeihong2018]

Do you use pnpm?

[keiyu-lab]

Thanks for replying.
No I am using npm.

[qiufeihong2018]

You can use pnpm install && pnpm start