Error while building Unreal Editor in UE4 4.19 UWP source with VS2015

Hi,
I have been trying to build 4.19 UWP From source and have been getting this error:

Error D8004 ‘/FU’ requires an argument (0:00.12 at +0:06) UE4

F:\Unreal\UWP\MICROSOFT_UWP_UNREAL\Engine\Intermediate\ProjectFiles\cl

I have tried it on Visual Studio 2019, 2017 and 2015 and have got the windows sdk and UWP tools.