Traceback (most recent call last):
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/protobuf/internal/python_message.py",
 
line 545, in _GetFieldByName
    return message_descriptor.fields_by_name[field_name]
KeyError: 'proto3_optional'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "google_cost.py", line 47, in <module>
    cost_sg1=main(googleads_client, "2810333029",data_date)
  File "google_cost.py", line 11, in main
    ga_service = client.get_service("GoogleAdsService")
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/client.py",
 
line 358, in get_service
    service_client_class = getattr(
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/__init__.py",
 
line 1696, in __getattr__
    module = importlib.import_module(f"{_lazy_type_to_package_map[name]}")
  File "/usr/local/python3/lib/python3.8/importlib/__init__.py", line 127, 
in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in 
_call_with_frames_removed
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/services/services/google_ads_service/__init__.py",
 
line 16, in <module>
    from .client import GoogleAdsServiceClient
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/services/services/google_ads_service/client.py",
 
line 32, in <module>
    from google.ads.googleads.v8.services.services.google_ads_service 
import pagers
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/services/services/google_ads_service/pagers.py",
 
line 18, in <module>
    from google.ads.googleads.v8.services.types import google_ads_service
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/services/types/google_ads_service.py",
 
line 18, in <module>
    from google.ads.googleads.v8.common.types import metrics as gagc_metrics
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/ads/googleads/v8/common/types/metrics.py",
 
line 29, in <module>
    class Metrics(proto.Message):
  File "/usr/local/python3/lib/python3.8/site-packages/proto/message.py", 
line 176, in __new__
    field.descriptor.oneof_index = oneofs[field.oneof] = len(oneofs)
  File "/usr/local/python3/lib/python3.8/site-packages/proto/fields.py", 
line 104, in descriptor
    self._descriptor = descriptor_pb2.FieldDescriptorProto(
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/protobuf/internal/python_message.py",
 
line 484, in init
    field = _GetFieldByName(message_descriptor, field_name)
  File 
"/usr/local/python3/lib/python3.8/site-packages/google/protobuf/internal/python_message.py",
 
line 547, in _GetFieldByName
    raise ValueError('Protocol message %s has no "%s" field.' %
ValueError: Protocol message FieldDescriptorProto has no "proto3_optional" 
field.


description:when i run the program in my mac,it is ok.but when i run it in 
linux ,it has an error.I am going to obtain the cost of account.so what is 
the reason?

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