In this course, you find many code snapshots attached to course lectures and always to the last lectures of each module.
These snapshots help you debug your code in order to find + fix errors or code differences.
If something doesn't work as shown in the lectures, definitely look up the nearest snapshot you find attached and compare it to your code first.
Code snapshots come as ZIP files which you have to extract. Then, you'll find the folder and file structure you also see in the videos.
If you want to run code snapshots, you need to run npm install in the project folder first. Thereafter, you should be able to start up the (development) server with npm start.
Important: If we're using any database URLs and credentials, you of course need to swap mine for yours in the snapshots.