My 2D keeps disappearing and i am unable to do anything with it

Kitchen.skp (2.7 MB)

I am unable to change anything in the model. When i open up the model everything shows. When i try to do something, it disappears. I change the view and everything, but nothing shows. It’s only a 2D drawing. I don’t understand what is happening. Please help me.

Check this file
Kitchen2.skp (2.7 MB)

Wow. That worked. Thank you so much! What was wrong with it?