Where is this coming from?
All other constants I see in the Project Settings in the Firebase console.
The question is not clear and can you please specify the lesson?
your form is not helpful for this course.
https://www.educative.io/courses/integrating-firebase-with-react/JPrE0ZnmoVP
https://www.educative.io/courses/integrating-firebase-with-react/gx5Z9p51wz9
outdated.
subsequently this is outdated as well.
https://www.educative.io/courses/integrating-firebase-with-react/RL2BxPV3rwY