[BUG] Invalid type warnings/errors on OTEL tracing example

[ismael-dm]

Describe the bug
I´m trying the example described here and warnings of "Invalid type" are appearing constantly on the terminal.

Code to reproduce the error

from smolagents import (
    CodeAgent,
    ToolCallingAgent,
    ManagedAgent,
    DuckDuckGoSearchTool,
    VisitWebpageTool,
    OpenAIServerModel,
)
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor

from openinference.instrumentation.smolagents import SmolagentsInstrumentor
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.trace.export import ConsoleSpanExporter, SimpleSpanProcessor

endpoint = "http://localhost:6006/v1/traces"
trace_provider = TracerProvider()
trace_provider.add_span_processor(SimpleSpanProcessor(OTLPSpanExporter(endpoint)))

SmolagentsInstrumentor().instrument(tracer_provider=trace_provider)

model = OpenAIServerModel(
    model_id="meta-llama/Llama-3.3-70B-Instruct",
    api_key="-",
    api_base="http://localhost:10000/v1",
)

agent = ToolCallingAgent(
    tools=[DuckDuckGoSearchTool(), VisitWebpageTool()],
    model=model,
)
managed_agent = ManagedAgent(
    agent=agent,
    name="managed_agent",
    description="This is an agent that can do web search.",
)
manager_agent = CodeAgent(
    tools=[],
    model=model,
    managed_agents=[managed_agent],
)
manager_agent.run(
    "If the US keeps its 2024 growth rate, how many years will it take for the GDP to double?"
)

Error logs (if any)

━━━━━━━━━━━━━━━━━━━━━ Step 1 ━━━━━━━━━━━━━━━━━
Invalid type dict in attribute 'llm.input_messages.0.message.content' value sequence. 
Expected one of ['bool', 'str', 'bytes', 'int', 'float'] or None
Invalid type dict in attribute 'llm.input_messages.1.message.content' value sequence. 
Expected one of ['bool', 'str', 'bytes', 'int', 'float'] or None
Invalid type dict in attribute 'llm.input_messages.2.message.content' value sequence. 
Expected one of ['bool', 'str', 'bytes', 'int', 'float'] or None

Expected behavior
No warnings or errors

Packages version:
smolagents 1.7.0

Additional context
No additional context

[albertvillanova]

Thanks for reporting, @ismael-dm.

I think this is an issue in openinference-instrumentation-smolagents.

[albertvillanova]

Reported:

• [bug] Smolagents invalid types with message content Arize-ai/openinference#1247

[nate-mar]

This should be resolved now. Feel free to verify and close!