bundle tool exe not opening

Traceback (most recent call last):
  File "bundletool.py", line 27, in <module>
    from files_pb2 import Assets
  File "PyInstaller\loader\pyimod03_importers.py", line 540, in exec_module
  File "files_pb2.py", line 5, in <module>
    from google.protobuf import descriptor as _descriptor
ModuleNotFoundError: No module named 'google'
[13992] Failed to execute script bundletool

windows 10