python - Pydantic throwing pydantic.errors.PydanticSchemaGenerationError all of a sudden - Stack Overflow

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I have a package (llama_index) in my project which uses a bunch of pydantic classes. I have been using this dependency without any issues for a couple days. Now today, all of a sudden, I try to run one of my scripts, and it throws an error when trying to import

from llama_index.core.schema import Document, TextNode

Here is the main part of the error message

schema
    raise PydanticSchemaGenerationError(
pydantic.errors.PydanticSchemaGenerationError: Unable to generate pydantic-core schema for typing.AsyncGenerator[str, NoneType]. Set `arbitrary_types_allowed=True` in the model_config to ignore this error or implement `__get_pydantic_core_schema__` on your type to fully support it.

If you got this error by calling handler(<some type>) within `__get_pydantic_core_schema__` then you likely need to call `handler.generate_schema(<some type>)` since we do not call `__get_pydantic_core_schema__` on `<some type>` otherwise to avoid infinite recursion.

For further information visit /2.10/u/schema-for-unknown-type

I would understand what to do if this was one of my classes throwing this error (just add in the class attribute of arbitrary_types_allowed=True ).

But this is springing up from a class in the llama_index package, which up until now was working without any issues

 File "/home/stevea/repos/interne/document-processing/.venv/lib/python3.12/site-packages/llama_index/core/instrumentation/events/query.py", line 21, in <module>
    class QueryEndEvent(BaseEvent):
  File "/home/stevea/repos/interne/document-processing/.venv/lib/python3.12/site-packages/pydantic/_internal/_model_construction.py", line 226, in __new__
    complete_model_class(
  File "/home/stevea/repos/interne/document-processing/.venv/lib/python3.12/site-packages/pydantic/_internal/_model_construction.py", line 658, in complete_model_class
    schema = cls.__get_pydantic_core_schema__(cls, handler)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

I suspect that it may have to do with the pydantic version I am running being incompatible with the llama_index package, but I checked my poetry lock file and the package is in line with the one I have installed

[[package]]
name = "llama-index-core"
version = "0.11.23"
description = "Interface between LLMs and your data"
optional = false
python-versions = "<4.0,>=3.8.1"
files = [
    {file = "llama_index_core-0.11.23-py3-none-any.whl", hash = "sha256:25a0cb4a055bfb348655ca4acd1b475529bd8537a7b81874ef14ed13f56e06c1"},
    {file = "llama_index_core-0.11.23.tar.gz", hash = "sha256:e150859696a0eae169fe19323f46e9a31af2c12c3182012e4d0353ea8eb06d24"},
]

[package.dependencies]
...
pydantic = ">=2.7.0,<3.0.0"

My installed version:

[[package]]
name = "pydantic"
version = "2.10.0"
description = "Data validation using Python type hints"
optional = false
python-versions = ">=3.8"

And I've also checked the history of my poetry file and none of the pydantic stuff has changed since I initially created the venv. At this point I don't understand what could be causing this or how I can fix it. I've tried re-installing the venv but no luck...

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