Better error messages for Component build failures

[mukundha]

Bug Description

I'm trying to use the AstraDBCQLToolComponent and was getting the following error when trying to build / run it

ValidationError: 1 validation error for Data
                             data
                               Input should be a valid dictionary [type=dict_type,
                             input_value='{', input_type=str]
                                 For further information visit
                             https://errors.pydantic.dev/2.10/v/dict_type

The above error message was not really helpful

There was a really long stack trace, which wasn't of much help, but there was a clue somewhere in the middle

functools.partial(<built-in method run of _contextvars.Context
                             object at 0x1777f9fc0>, <bound method AstraDBCQLToolComponent....
                                              |    -> <function BaseEventLoop.run_in_executor
                             at 0x10134bf60>
                                              -> <_UnixSelectorEventLoop running=True
                             closed=False debug=False>
                               File
                             "/Users/mukundha/.pyenv/versions/3.11.8/lib/python3.11/concurrent/
                             futures/thread.py", line 58, in run
                                 result = self.fn(*self.args, **self.kwargs)
                                          |        |            -> None
                                          |        -> None
                                          -> None
                               File "<string>", line 222, in run_model
                               File "<string>", line 222, in <listcomp>
                               File
                             "/Users/mukundha/Documents/work/fy26/workshop/ds-workshops-attende
                             es/langflow/.venv/lib/python3.11/site-packages/pydantic/main.py",
                             line 214, in __init__

It looked like error might be related to the run_model

tried to add few prints to debug the vars, then started seeing more useful error messages, for eg,

{'description': 'Unauthenticated gRPC operation (Status.Code.UNAUTHENTICATED->401): UNAUTHENTICATED: Invalid token', 'code': 401, 'grpcStatus': 'UNAUTHENTICATED', 'internalTxId': None}

{'description': "Table 'sensor_data' not found (in keyspace 'default_keyspace')", 'code': 400, 'grpcStatus': None, 'internalTxId': None}

If we are able to surface these messages to the Component status, that would be extremely helpful for the developers.

Reproduction

• Add AstraDBCQLToolComponent
• Specify a wrong token
• Try to build

Expected behavior

Expected error:

{'description': 'Unauthenticated gRPC operation (Status.Code.UNAUTHENTICATED->401): UNAUTHENTICATED: Invalid token', 'code': 401, 'grpcStatus': 'UNAUTHENTICATED', 'internalTxId': None}

Actual:

ValidationError: 1 validation error for Data
                             data
                               Input should be a valid dictionary [type=dict_type,
                             input_value='{', input_type=str]
                                 For further information visit
                             https://errors.pydantic.dev/2.10/v/dict_type

Who can help?

No response

Operating System

Mac

Langflow Version

1.1.3

Python Version

3.12

Screenshot

No response

Flow File

No response