Troubleshooting 500 Internal Server Error in Phoenix API Usage

Hey 🔒[private user], welcome back! 🔒[private user] can you take a look here?

Oh okay I'll try again

Thanks!!

🔒[private user] I was able to reproduce it from local. (ran phoenix as a docker container) and found this in the logs

pyarrow.lib.ArrowInvalid: ('cannot mix struct and non-struct, non-null values', 'Conversion failed for column attributes.llm.prompt_template.variables with type object')

Hey Sean L., how did this data get produced?

This is likely related to this issue, and there is a fix in progress. Sean L. If you can share a code snippet to reproduce, that would be helpful.

I don’t think I did anything particularly different from the tutorial. I tried both https://app.phoenix.arize.com and docker image (5.8.0). in both cases, the spans appear as expected in the browser, but when attempting to download it as df it gives me 500 error.

# Writing Span
import os
from langchain_anthropic import ChatAnthropic
from openinference.instrumentation.langchain import LangChainInstrumentor
from phoenix.otel import register

trace_provider = register(
    endpoint="http://localhost:4317"
)
LangChainInstrumentor().instrument(trace_provider=trace_provider)

llm = ChatAnthropic(
    model="claude-3-5-sonnet-latest",
    api_key=ANTHROPIC_API_KEY
)

llm.invoke("hello")

# Reading Span
# arize-phoenix==5.8.0
import phoenix as px

df = px.Client(
    endpoint="http://localhost:6006",
).get_spans_dataframe()

# Error Message
HTTPStatusError: Server error '500 Internal Server Error' for url 'http://localhost:6006/v1/spans?project_name=default&project-name=default'

thanks Sean L., we will test out the current fix to ensure it resolves the issue for you

Sean L. This issue should be resolved in arize-phoenix==5.9.0

It’s working! Thank you very much!

for the hosted phoenix, I had to clear the data. guess it’s the malformatted data that got in before the patch caused error. once I giving it new data, it’s responding as expected

Always impressed with the promptness of the team. Kudos 👏 👏👏

forgot to mention, you also need to update your client version of arize-phoenix