TypeError: cannot specify both default and default_factory

[maniraja1122]

The crawler was working locallly but now on apify, we are getting this error

TypeError: cannot specify both default and default_factory

full logs:

025-10-21T17:53:59.161Z Traceback (most recent call last):
2025-10-21T17:53:59.162Z   File "<frozen runpy>", line 198, in _run_module_as_main
2025-10-21T17:53:59.163Z   File "<frozen runpy>", line 88, in _run_code
2025-10-21T17:53:59.163Z   File "/usr/src/app/src/__main__.py", line 3, in <module>
2025-10-21T17:53:59.164Z     from .main import main
2025-10-21T17:53:59.165Z   File "/usr/src/app/src/main.py", line 13, in <module>
2025-10-21T17:53:59.171Z     from apify import Actor
2025-10-21T17:53:59.171Z   File "/usr/local/lib/python3.12/site-packages/apify/__init__.py", line 4, in <module>
2025-10-21T17:53:59.172Z     from crawlee import Request
2025-10-21T17:53:59.173Z   File "/usr/local/lib/python3.12/site-packages/crawlee/__init__.py", line 3, in <module>
2025-10-21T17:53:59.181Z     from ._request import Request, RequestOptions
2025-10-21T17:53:59.182Z   File "/usr/local/lib/python3.12/site-packages/crawlee/_request.py", line 11, in <module>
2025-10-21T17:53:59.183Z     from crawlee._types import EnqueueStrategy, HttpHeaders, HttpMethod, HttpPayload, JsonSerializable
2025-10-21T17:53:59.184Z   File "/usr/local/lib/python3.12/site-packages/crawlee/_types.py", line 64, in <module>
2025-10-21T17:53:59.184Z     class HttpHeaders(RootModel, Mapping[str, str]):
2025-10-21T17:53:59.185Z   File "/usr/local/lib/python3.12/site-packages/pydantic/_internal/_model_construction.py", line 242, in __new__
2025-10-21T17:53:59.186Z     set_model_fields(cls, config_wrapper=config_wrapper, ns_resolver=ns_resolver)
2025-10-21T17:53:59.186Z   File "/usr/local/lib/python3.12/site-packages/pydantic/_internal/_model_construction.py", line 566, in set_model_fields
2025-10-21T17:53:59.187Z     fields, class_vars = collect_model_fields(cls, config_wrapper, ns_resolver, typevars_map=typevars_map)
2025-10-21T17:53:59.191Z                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-10-21T17:53:59.192Z   File "/usr/local/lib/python3.12/site-packages/pydantic/_internal/_fields.py", line 364, in collect_model_fields
2025-10-21T17:53:59.197Z     field_info = FieldInfo_.from_annotated_attribute(ann_type, assigned_value, _source=AnnotationSource.CLASS)
2025-10-21T17:53:59.199Z                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-10-21T17:53:59.199Z   File "/usr/local/lib/python3.12/site-packages/pydantic/fields.py", line 443, in from_annotated_attribute
2025-10-21T17:53:59.200Z     field_info = FieldInfo._construct(
2025-10-21T17:53:59.200Z                  ^^^^^^^^^^^^^^^^^^^^^
2025-10-21T17:53:59.201Z   File "/usr/local/lib/python3.12/site-packages/pydantic/fields.py", line 519, in _construct
2025-10-21T17:53:59.202Z     merged_field_info = cls(**merged_kwargs)
2025-10-21T17:53:59.202Z                         ^^^^^^^^^^^^^^^^^^^^
2025-10-21T17:53:59.203Z   File "/usr/local/lib/python3.12/site-packages/pydantic/fields.py", line 232, in __init__
2025-10-21T17:53:59.203Z     raise TypeError('cannot specify both default and default_factory')
2025-10-21T17:53:59.204Z TypeError: cannot specify both default and default_factory

[vdusek]

Hi @maniraja1122, this looks like a duplicate of apify/crawlee-python#1464, which should already be resolved in the latest patch versions.

Could you please let us know which versions of the SDK (and Crawlee) you're using? If you can share the full Actor run log, we'll be able to investigate further. One of the first log lines should contain the versions and should look like this:

[apify] INFO  Initializing Actor ({"apify_sdk_version": "3.0.3", "apify_client_version": "2.2.0", "crawlee_version": "1.0.3", "python_version": "3.13.7", "os": "linux"})

[B4nan]

Closing as resolved, let us know if upgrading didn't help and we can reopen.