Hello i'm a student, and for my Final Year Project I have to learn new things by myself, and i'm trying to learn nextjs.
I'm doing the getting started but i'm a little bit confused when it comes to setting up my database

https://nextjs.org/learn/dashboard-app/setting-up-your-database#seed-your-database

Here they ask me to delete a file, i thought it was placeholder-data.ts but when I delete it i have an error in my seed's folder

and in my localhost
So my question is , do you guys know what file they are asking to delete ? sorry for bother and have a nice day