Visual Studio build 6 error

What is going on ?
I cant build anything with Visual Studio.

A simple Actor c++ file wont build.

The command ""C:\Program Files\Epic Games\UE_5.3\Engine\Build\BatchFiles\Build.bat" MyProjectEditor Win64 Development -Project="C:\Users\18135\Desktop\UEpro\MyProject\MyProject.uproject" -WaitMutex -FromMsBuild" exited with code 6.

Are you compiling through VS? Is your editor open and Live Coding enabled?