Can't get unreal ed 4 to work

i would like to make a ctf map for ut4… In projects I go to browse(, then UnrealTournament-clean-master(1) which i downloaded from, then i open unrealtournament inside the folder(, then it says “this project was made with a different version of the unreal engine. converting to this version will rebuild your code projects”( converting fails. When i click skip conversion, a box pops up which says “the following modules are missing or built with a different engine version”( I click yes to rebuild them and it fails.