with_structured_output returns this 400 BAD Request must be specified when not using one_of

[jeffmorris1993]

Hi all,

I am using ChatGoogleGenerativeAI within the latest version of the package (2.0.8). with_structured_output results in me getting this full issue:
google.api_core.exceptions.BadRequest: 400 POST https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro:generateContent?%24alt=json%3Benum-encoding%3Dint: * GenerateContentRequest.tools[0].function_declarations[0].parameters.properties[overlap_classification].type: must be specified when not using one_of
2025-01-09T03:39:45.455541804Z * GenerateContentRequest.tools[0].function_declarations[0].parameters.properties[similiar_requirements].items.properties[reuse_classification].type: must be specified when not using one_of

And here is the Pydantic model that is used as the schema:

class OverlapEnum(str, Enum):
    no_overlap = "No-Overlap"
    clear_overlap = "Overlap"
    some_overlap = "Some-Overlap"


class SimiliarRequirementExplanationModel(BaseModel):
    id: str = Field(..., description="ID of the similar requirement")
    description: str = Field(..., description="The text description of the similar requirement")
    reuse_classification: OverlapEnum = Field(..., description="Classification of the similar requirement")
    explanation: str = Field(..., description="Explanation of the reuse determination")


class InternalReuseModel(BaseModel):
    overlap_classification: OverlapEnum = Field(
        ..., description="Overall classification of the requirement's overlap across the comparision groups"
    )
    similiar_requirements: list[SimiliarRequirementExplanationModel] = Field(
        ..., description="List of similar requirements and their reuse classification"
    )

Can anyone help me understand this error and what I need to fix in my code?