Necrollo

What i'm supposed to do to power the generator in the under ruins?? i've been running around and i can't find anything, i've found a switch and it does nothing, the generator which turns the wheel but does nothing, a vending machine out of power and a house that says that it must open somehow and thats it???????????? EDITTT: NVM I DIDN'T KNOW THAT THAT SIDE THINGY WAS INTERACTABLE

I downloaded it today, i'm gonna check if i missed something in the download page I'm using Aironfaar's and SWM modpacks, and the Uranium Fakemons too

Hellooo, I'm needing some help, how i'm supposed to use the apple itens to evolve applin??? it doesn't give me an option to use, only to give, is there an especific level to evolve it while helding the apples???