Repository: langchain
Issue: community.llms init Xinference fail :pydantic_core._pydantic_core.ValidationError:client [ type=missing]
Labels: 🤖:bug

### Checked other resources

- [X] I added a very descriptive title to this issue.
- [X] I searched the LangChain documentation with the integrated search.
- [X] I used the GitHub search to find a similar question and didn't find it.
- [X] I am sure that this is a bug in LangChain rather than my code.
- [X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

### Example Code

Code looks like this:
this code referecence xinference examples,but error.
[https://github.com/langchain-ai/langchain/blob/master/docs/docs/integrations/llms/xinference.ipynb](https://github.com/langchain-ai/langchain/blob/master/docs/docs/integrations/llms/xinference.ipynb)
```
from langchain_community.llms import Xinference
xinference_llm = Xinference(
    server_url="http://0.0.0.0:9997",
    model_uid="qwen2-instruct",
)
```

### Error Message and Stack Trace (if applicable)

Run this code with error

```
/root/miniconda3/bin/conda run -n llm_service_3.10 --no-capture-output python llm-service/xinference/xinference_qa.py 
Traceback (most recent call last):
  File "llm-service/xinference/xinference_qa.py", line 63, in <module>
    xinference_llm = Xinference(
  File "/root/miniconda3/envs/llm_service_3.10/lib/python3.10/site-packages/langchain_community/llms/xinference.py", line 111, in __init__
    super().__init__(
  File "/root/miniconda3/envs/llm_service_3.10/lib/python3.10/site-packages/langchain_core/load/serializable.py", line 111, in __init__
    super().__init__(*args, **kwargs)
  File "/root/miniconda3/envs/llm_service_3.10/lib/python3.10/site-packages/pydantic/main.py", line 193, in __init__
    self.__pydantic_validator__.validate_python(data, self_instance=self)
pydantic_core._pydantic_core.ValidationError: 1 validation error for Xinference
client
  Field required [type=missing, input_value={'server_url': 'http://10...ct', 'model_kwargs': {}}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.8/v/missing
ERROR conda.cli.main_run:execute(125): `conda run python llm-service/xinference/xinference_qa.py` failed. (See above for error)
```

### Description

Xinference run ok, I use client call endpiont ,above error
 I don't know what happened.

### System Info

ubuntu20.04
CUDA:12.0
python3.10.15

Package                  Version
------------------------ ---------
aiohappyeyeballs         2.4.3
aiohttp                  3.10.10
aiosignal                1.3.1
annotated-types          0.7.0
anyio                    4.6.0
async-timeout            4.0.3
attrs                    24.2.0
certifi                  2024.8.30
charset-normalizer       3.4.0
dataclasses-json         0.6.7
exceptiongroup           1.2.2
frozenlist               1.4.1
greenlet                 3.1.1
h11                      0.14.0
httpcore                 1.0.6
httpx                    0.27.2
idna                     3.10
jsonpatch                1.33
jsonpointer              3.0.0
langchain                0.3.3
langchain-community      0.3.2
langchain-core           0.3.10
langchain-text-splitters 0.3.0
langsmith                0.1.134
marshmallow              3.22.0
multidict                6.1.0
mypy-extensions          1.0.0
numpy                    1.26.4
orjson                   3.10.7
packaging                24.1
pip                      24.2
propcache                0.2.0
pydantic                 2.9.2
pydantic_core            2.23.4
pydantic-settings        2.5.2
python-dotenv            1.0.1
PyYAML                   6.0.2
requests                 2.32.3
requests-toolbelt        1.0.0
setuptools               75.1.0
sniffio                  1.3.1
SQLAlchemy               2.0.35
tenacity                 8.5.0
typing_extensions        4.12.2
typing-inspect           0.9.0
urllib3                  2.2.3
wheel                    0.44.0
xinference-client        0.15.3
yarl                     1.14.0