To make it easier to understand here is a log error: While trying to load package /JunoGame/Effects/CharacterFX/NS_Juno_Buff_Light, a dependent package /Game/Effects/Nigara/Modules/ComponentRender/FN_Gen5_Light was not available. Addiltional explanatory information follows: FPackageName: Skipped package /Game/Effects/Niagara/Modules/ComponentRenderer/FN_Gen5_Lighthas a valid, mounted, mount point does not exist on disk either on disk or instore. The uncooked file would be expected on disk at 'D:/Fortnite/FortniteGame/Content/Effects/Niagara/Modules/ComponentRenderer/FN_Gen5_Light ’ . Perhaps it has been deleted or was not synced?
I looked at this location and There was no Effects folder in Content Folder. And there are alot other logs but most redirect toward D:/Fortnite/FortniteGame/Content/Effects.