Google Vertex AI gives error about SafetySetting

[mieslep]

Bug Description

Changes in LangChain have broken the langchain-google-vertexai package, resulting in error:

"name": "PydanticUndefinedAnnotation",
"message": "name 'SafetySetting' is not defined

This is related to langchain-ai/langchain-google#610 (comment) and langchain-ai/langchain-google#613 , so presumably Langflow simply has a bad dependency.

Reproduction

[project]
name = "test"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.12"
dependencies = [
"ipykernel>=6.29.5",
"ipywidgets>=8.1.5",
"python-dotenv>=1.0.1",
"pypdf>=5.1.0",
"langchain-core>=0.3.20",
"langchain-google-vertexai>=2.0.7",
]

from langchain_google_vertexai import VertexAI
model = VertexAI(model_name="gemini-1.5-flash-001")

Expected behavior

There should be no error.

Who can help?

No response

Operating System

Windows

Langflow Version

1.1.0

Python Version

None

Screenshot

No response

Flow File

No response

[edwinjosechittilappilly]

Thank you for your feedback. We tested this on main and were not able to reproduce. Please reopen if you hit this and provide a trace.

[sahilgupta2105]

I see the same error when trying to run the example notebook from GCP Gen-AI.

Edit: Upgrading the pip packages to the latest versions also results in the same error.

Error trace below,

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
[/usr/local/lib/python3.10/dist-packages/pydantic/_internal/_generate_schema.py](https://localhost:8080/#) in _common_field_schema(self, name, field_info, decorators)
   1226             try:
-> 1227                 evaluated_type = _typing_extra.eval_type(field_info.annotation, *self._types_namespace)
   1228             except NameError as e:

29 frames
NameError: name 'SafetySetting' is not defined

The above exception was the direct cause of the following exception:

PydanticUndefinedAnnotation               Traceback (most recent call last)
[/usr/local/lib/python3.10/dist-packages/pydantic/_internal/_generate_schema.py](https://localhost:8080/#) in _common_field_schema(self, name, field_info, decorators)
   1227                 evaluated_type = _typing_extra.eval_type(field_info.annotation, *self._types_namespace)
   1228             except NameError as e:
-> 1229                 raise PydanticUndefinedAnnotation.from_name_error(e) from e
   1230             evaluated_type = replace_types(evaluated_type, self._typevars_map)
   1231             field_info.evaluated = True

PydanticUndefinedAnnotation: name 'SafetySetting' is not defined

For further information visit https://errors.pydantic.dev/2.10/u/undefined-annotation