I cant activate Content Layout without sidebars

Hello, i have theme "interior", and i want to change Content Layout settings, but when i click on the pictures with "No sidebars", "Right sidebar", "Left sidebar", "Left and Right sidebars", nothing changes. "Right sidebar" is held, and i can do nothing.
I think, than reinstallation of theme will help me, but i don't want to do it, because my data will be broken.

Can You say me, in which file and how i can change this setting manually?

thanks in advance