“This file must not be in a theme” messages when using OCDI plugin

Hi, I’m using OCDI (One Click Demo Import) plugin and I’m using their local import files process. So I have wie files for importing widgets, XML for the site’s content and dat files for Customizer data. All of them are within my theme’s folder.
The problem is that I’m running Theme Check plugin and getting the following errors:

REQUIRED: widget.wie Widget import file found. This file must not be in a theme.
REQUIRED: demo-content.xml XML file found. This file must not be in a theme.
REQUIRED: customizer.dat Customizer import file found. This file must not be in a theme.

Why is that? Do I need to contact the OCDI developers so that can fix the issue?