I Get This Error When Making a New Project

An error occurred while trying to generate project files.

Running C:/Program Files/Epic Games/UE_4.19/Engine/Binaries/DotNET/UnrealBuildTool.exe -projectfiles -project=“C:/Users/Water/Documents/Unreal Projects/CPlusPlusTest/CPlusPlusTest.uproject” -game -rocket -progress
Discovering modules, targets and source code for project…
WARNING: Exception while generating include data for UE4Editor: Windows SDK v8.1 must be installed in order to build this target.
Binding IntelliSense data… 0%@progress ‘Binding IntelliSense data…’ 50%
WARNING: Exception while generating include data for CPlusPlusTestEditor: Windows SDK v8.1 must be installed in order to build this target.
Binding IntelliSense data… 50%@progress ‘Binding IntelliSense data…’ 100%
ERROR: UnrealBuildTool Exception: Windows SDK v8.1 must be installed in order to build this target.

I get this error when I try to create a new project using c++

I am new to the engine so I have no idea what to do.

Any help?