Hi, I got a fatal error with a command "build -p *edk2\MdeModulePkg\MdeModulePkg.dec* -a X64 -t VS2015x86". (Python version is 2.7.15.Build tool is VS2015x86) But *UEFI\edk2\EmulatorPkg\EmulatorPkg.dec* can be build successfully. I have update edk2 with "git pull" but the same error occured. I also test it in another laptop with python version 3.9.9 build tool VS2019,a same error occur. What should I do? error log as blow: [image: image.png] Thanks!