Not Enough Room Error

i was trying to download it like normal but got the error [AppDataFolder] Riot Games\ League of Legends 3.0.1\install. so i searched my computer and it didn't come up and i checked everything please help i don't know what to do i tried deleting the installer and re-downloading it but that didn't help i checked under everything i even went as far as to copy and paste it into the search bar and it didn't come up.

Please Help Wrathlog