Http_req_duration metrcis not exported via OpenTelemetry(OTEL)

Hi,I am trying to export k6 metrics to grafana using OTLP.But I cannot see metrics related to http_req_duration.

Here is my dockerfile:

FROM grafana/k6:0.54.0-with-browser

ENV K6_OTEL_EXPORTER_TYPE=http

ENV K6_OTEL_METRIC_PREFIX=k6_sample_054_

ENV K6_OTEL_HTTP_EXPORTER_ENDPOINT=<otlp_endpoint_url>

ENV K6_OTEL_HTTP_EXPORTER_INSECURE=false

ENV K6_OTEL_HTTP_EXPORTER_URL_PATH=/v1/metrics

ENV K6_OTEL_HEADERS=“Authorization=Basic <auth_header_base_64>”

ENV K6_OTEL_FLUSH_INTERVAL=1s

ENV K6_OTEL_EXPORT_INTERVAL=1s

USER root

RUN mkdir -p /k6/src && chmod 777 /k6/src

WORKDIR /scripts

COPY scripts/ /scripts/

ENTRYPOINT [“k6”, “run”, “-o”, “experimental-opentelemetry”]

CMD [“sample-test.js”]

run log:

I can see the metrics other metrics on grafana dash but http_req_duration related metrics are missing.

Can someone please help?

Thanks.