(215).[npm start error] fs. findAncestorFile is not a function

To figure out the error, I found this link
And then I checked the one below. And there's no problem.

next day I got an new error...TT

For parcel current version, upgraded the parcel version.

and you can check the parcel version

$ parcell --version//globally
$ npx parcel --version//locally

parcel version is updated as 2.6.0
so I did npm start.
and I got an error like the one below.

I needed to upgrade the version of "@parcel/transformer-sass" to ^2.0.1

How to install @parcel/transformer-sass

npm i @parcel/transformer-sass

And then I did "npm start" again

and when I went to the website(https://localhost:1234), I got the window below.