The concern is that I can not understand the error, it is very bad to explain, and google translate does not allow me to understand, can someone help me?If you speak French, that would be the best of the best!
The Overwolf app generates a small file called manifest.json. This file is a list of the mods in your modpack.
The error also says if your modpack is multiplayer, then you may upload a server modpack. Create a copy of your modpack profile. Remove the client-only mods. Add any server-only mods. Export this server modpack. On your CurseForge project page, open the modpack file page. Click "Edit" and then "Additional File" to upload the new server modpack.