Troubleshooting OpenTelemetry and Phoenix Integration Errors

Hi I am building a multiagent system with google ADK and some MCP tools, I was trying to integrate phoenix for traceability. I have signedup and created a space, and created an API key. Was following the steps given in the documentation attached below https://google.github.io/adk-docs/observability/phoenix/ I set up things (endpoint and api key) as mentioned in the documentation. I am unable to trace anything and getting an error - "Failed to export batch code: 401, reason: Invalid token" OpenTelemetry Tracing Details | Phoenix Project: default | Span Processor: SimpleSpanProcessor | Collector Endpoint: "my personal space endpoint" | Transport: HTTP + protobuf | Transport Headers: {'api_key': '****'} | | Using a default SpanProcessor. `add_span_processor` will overwrite this default. | | WARNING: It is strongly advised to use a BatchSpanProcessor in production environments. | | `register` has set this TracerProvider as the global OpenTelemetry default. | To disable this behavior, call `register` with `set_global_tracer_provider=False`. The API key is correct, I can see the events from google ADK on my console, but nothing on phoenix traces (not even created a new project) Any help to set this up is appreciated. Thanks