After Effects Templates Not Working

I have downloaded several After Effects templates and when I go to use each one in After Effects I get popups saying files are missing. I have been unable to use any of the templates I’ve downloaded. Is there a reason every template seems to have files missing? I’d like to be able to use the ones I’ve downloaded. Is there something I’m missing in how to use them or in something else that has to be downloaded with the files needed? I thought everything was included when you download the template.