Add-on "can't import developer_utils"

I am trying to install COA tools add-on but when I try to run it I am given the error message “can’t import developer utils.” I do not know anything about python, but I know that you have to import modules in the beginning of a python code and I think “developer_utils” is a module. This file is in the same folder as the So I am assuming the is trying to find the file but cannot find it. I am not sure.I also noticed that the says this: from . import developer_utils
modules = developer_utils.setup_addon_modules(path, name)

Do I just leave the “path” and “name” fields how they are or do I add a file path for the file to find the developer_utils? Is there something else here that I am missing?