This is the sample code for Laravel 6.x: Learn By Coding by Scott Hughes.
There are folders for each chapter with source code. Each folder includes the files that were updated during that chapter in their final form for that chapter.
You can buy the book on Amazon here: https://www.amazon.com/dp/B081Z6M8BJ.
Read more about the book at Scott Hughes' website: https://www.webapppath.com/.