Exported method ParachainHost_availability_cores is not found

[LukeWheeldon]

Is there an existing issue?

• I have searched the existing issues

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• This is not a support question.

Description of bug

I am getting the following error at very regular intervals in my node logs:

2022-12-18 15:03:24 failed to assemble or send inherent data err=Runtime(Execution { runtime_api_name: "availability_cores", source: Application(Execution(Other("Exported method ParachainHost_availability_cores is not found"))) })

It is a new server so I am not sure whether it is normal and to ignore, or if it is something I should be reporting. I am opening this ticket in case it would be relevant to the dev team.

Steps to reproduce

polkadot \
        --sync warp \
        --validator \
        --pruning 1000 \
        -d /srv/polkadot \
        --listen-addr /ip4/1.2.3.4/tcp/30333 \
        --prometheus-external \
        --no-mdns \
        --no-telemetry

[bkchr]

Somewhat duplicate of: paritytech/polkadot-sdk#793

[bkchr]

But, this is no issue. Just an incorrect error. You can ignore these log lines!