Help me to fix this bug, please. ERROR: Exception in ASGI application

[naoassisto]

Issue Summary

Since this morning, I've been encountering the following error when running my FastAPI application on Google Colab. It occurs whenever I try to perform any action, and it completely halts the execution of my app:

ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/pydantic/type_adapter.py", line 277, in _init_core_attrs
    self._core_schema = _getattr_no_parents(self._type, '__pydantic_core_schema__')
  File "/usr/local/lib/python3.10/dist-packages/pydantic/type_adapter.py", line 119, in _getattr_no_parents
    raise AttributeError(attribute)
AttributeError: __pydantic_core_schema__

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/protocols/http/h11_impl.py", line 406, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
  File "/usr/local/lib/python3.10/dist-packages/uvicorn/middleware/proxy_headers.py", line 70, in __call__
    return await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/applications.py", line 113, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/lib/python3.10/dist-packages/starlette/middleware/errors.py", line 187, in __call__
    raise exc
...
pydantic.errors.PydanticSchemaGenerationError: Unable to generate pydantic-core schema for <class 'starlette.requests.Request'>. 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.

For further information visit https://errors.pydantic.dev/2.8/u/schema-for-unknown-type

Steps Taken

I've tried several approaches to resolve the issue, including:

1. Changing library versions: I’ve downgraded and upgraded various library versions (specifically FastAPI, Pydantic, and Starlette), but the issue persists across different versions.

2. Setting arbitrary_types_allowed=True: Based on the error message, I tried adding arbitrary_types_allowed=True to the model configuration, but that did not resolve the issue either.

Request for Help

• Has anyone else run into this error recently?
• Is there a more stable combination of library versions that works?
• Any other potential workarounds for handling the __pydantic_core_schema__ issue?

Any guidance or suggestions would be greatly appreciated! Thanks in advance for your help!

[sktv7771]

I modified the requirements.txt file and solved it. The gradio 4.42.0 caused a problem, so I changed the more recent version to gradio 4.43.0 and solved it.

example

to

There may be grammar errors using a translator.
I hope your problem will be solved.