You already found the problem - the problem is that you're getting a "renpy conflict" error. You know the name, so obviously you're getting some kind of error message. What is the exact message, under what circumstances does the error appear and what have you tried to fix it?
Saying "how to fix this error?" is like going to a mechanic and saying "how to fix my broken car?" It could be a thousand things, so we need more details.