Fix build script error.because starting with Python 3.9, the util module was moved from importlib to a separate top-level module called importlib.util. Therefore, if you are using Python 3.9 or later and you receive an AttributeError stating that module 'importlib' has no attribute 'util', it is likely due to a compatibility issue with your code. You can fix this issue by updating your code to import importlib.util directly (#30796)

python/mach/mach/main.py

@@ -10,7 +10,7 @@ from __future__ import absolute_import, print_function, unicode_literals
 import argparse
 import codecs
 import errno
-import importlib
+import importlib.util
 import logging
 import os
 import sys