the emission of the lamp isn't working at all I am beginner in blender.

according to my toturial (grant abbit) I have to create an emission lamp in my project.I did what he had said. (make emission white and assign it...) .but it didn't work.what's wrong?







here is the blend file:


and this is the result (with light)
You are in Eevee, and the emission shader lighting other things can only be done in cycles (or at least as far as I know).