Compile error through python script

[revenger2000]

Having error while using the build_kernel.py:

System: Linux Mint x64

Clang: clang-4639204

sudo python build_kernel.py --oneui --target=m31
Checking file if exists: AnyKernel3/version... Not found
Checking file if exists: toolchain... Found

TARGET_KERNEL=Grass
TARGET_VARIANT=OneUI
TARGET_DEVICE=m31
TARGET_INCLUDES_KSU=True
TARGET_USES_LLVM=True
TOOLCHAIN=Android (4639204 based on r316199) clang version 6.0.1

Make clean...
Make defconfig...
Output log files: 62314_stdout.log, 62314_stderr.log
Traceback (most recent call last):
File "/home/revenger2000/android_kernel_samsung_universal9611/build_kernel.py", line 184, in
main()
File "/home/revenger2000/android_kernel_samsung_universal9611/build_kernel.py", line 148, in main
popen_impl(make_defconfig)
File "/home/revenger2000/android_kernel_samsung_universal9611/build_kernel.py", line 32, in popen_impl
raise RuntimeError(f"Command failed: {command}. Exitcode: {s.returncode}")
RuntimeError: Command failed: ['make', 'O=out', 'LLVM=1', '-j8', 'CROSS_COMPILE=aarch64-linux-gnu-', 'CC=clang', 'LD=ld.lld', 'AS=llvm-as', 'AR=llvm-ar', 'OBJDUMP=llvm-objdump', 'READELF=llvm-readelf', 'NM=llvm-nm', 'OBJCOPY=llvm-objcopy', '-j8', 'vendor/m31_defconfig', 'vendor/grass.config', 'vendor/m31.config', 'vendor/ksu.config']. Exitcode: 2

Does anyone have an idea how to solve this problem?