Why is the react application not connecting to the airtable backend?

Question

React

Has anyone made a react application with a backend on airtable?
https://github.com/kiberlain/Build-a-JAMstack-Cour...

I forked the project, added connection parameters to .env, the application works but without airtable
in the console
index.js:1 Warning: Tags: `key` is not a prop. Trying to access it will result in `undefined` being returned. If you need to access the same value within the child component, you should pass it as a different prop. ( https://fb.me/react-special-props )
in Tags (at CourseForm.js:62)
in div (at CourseForm.js:60)
in form (at CourseForm.js:39)
in div (at CourseForm .js:38)
in div (at CourseForm.js:36)
in CourseForm (at App.js:25)
in div (at App.js:23)
in App (at src/index.js:10)
in StrictMode (at src/index.js:9)
console. @index.js:1

Why is that? Where is the mistake?
If you can clone and see, I will be very grateful