Missing packages in Vaadin project tutorial

I’m currently following the “Spring Boot Web App Tutorial (Java) | Full Course” and I’ve downloaded the project starter. However, I’ve noticed that there are some packages missing that are used in the tutorial. I’m having trouble finding these packages, and I’m not sure how to proceed.

Has anyone else experienced this issue or have any suggestions on where I can find these missing packages? Any help would be greatly appreciated. Thank you!

Here is a screenshot of the missing packages:

Which specific packages are missing?

Entity,generator,repository,service

I only have 2 classes, Application and ListView

The video version is unfortunately already outdated in many parts. Please take a look at the text version which is updated for Vaadin 24 Tutorial | Vaadin Docs

Thank you!