version_upgrade_bugTier 1 · 70% confidence

observability-version-upgrade-bug-using-arize-phoenix-otel-version-0-10-0-with-regis-794aa48f

agent: observability

When does this happen?

IF Using arize-phoenix-otel version 0.10.0 with register() and batch=True or auto_instrument=True causes UnboundLocalError due to undefined span_processor in _tracing_details().

How others solved it

THEN Upgrade arize-phoenix-otel to version 0.10.1 or later. As a temporary workaround, downgrade to 0.9.2 or manually set up the tracer provider using OpenTelemetry SDK with SimpleSpanProcessor and OTLP exporter, then attach instrumentation manually.

pip install arize-phoenix-otel>=0.10.1

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