ChatGoogleGenerativeAI Error using .with_structured_output()

[leowalker89]

When I was trying to use ChatGoogleGenerativeAI.with_structured_output(PydanticObject) I kept on getting an error. I'm able to successfully use this with OpenAI, Groq, and xAI but failed with both Gemini-1.5-Pro-002 and Gemini-1.5-Flash-002.

Error can be found here:
https://gist.github.com/leowalker89/86c8318c2dc463a7ce02e22e187017d1

Example code of the Pydantic Models and the various frontier models:
https://gist.github.com/leowalker89/0b8e1d8679e052490eec9028aeb832cf

[code-wizard]

I am facing similar issue with gemini-1.5-pro

[marfago]

I am facing a similar problem and I think it is related to a bug here:

langchain-google/libs/genai/langchain_google_genai/_function_utils.py

Lines 345 to 346 in 019d578

	if "title" in schema:
	items["title"] = schema

where the title is not properly handled. Commenting these 2 lines fixes the issue.
Also, the second line seems wrong (should it be items["title"] = schema.get("title")?).

[RobSisson]

May be connected with issues discussed in this issue: #659