I swear I'm getting a headache today -.-

After downloading Vendor files he cannot unpack

Traceback (most recent call last):
  File "/grapheneos-QQ3A.200705.002.2020.07.06.20/vendor/android-prepare-vendor/scripts/extract_android_ota_payload/extract_android_ota_payload.py", line 17, in <module>
    import update_metadata_pb2
  File "/grapheneos-QQ3A.200705.002.2020.07.06.20/vendor/android-prepare-vendor/scripts/extract_android_ota_payload/update_metadata_pb2.py", line 4, in <module>
    from google.protobuf import descriptor as _descriptor
ImportError: No module named google.protobuf
[-] OTA data extract failed