Composed looks issue

Hello

I am created a SharePoint system based on one site and several subsite. I have created several composed looks on the site. I have then been able to copy the composed looks to the new subsite, but now both the composed looks and change the look view appeared to be empty for all subsites. Do you know how I can change it? The goal is to be able to define a specific look to each subsite.

Thanks in advance

Yann