CPU Serial empty. Use MAC address instead.

[Taxom]

After restart the router rbfeeder does not connect.
Reloading OrangePi did not help.
log attaded in txt

[pedrão18]

I also got this error after reinstalling the OS (now i use armbiam bullseye on OrangePi too).
Apparently the error "Invalid sharing-key" it was solved by stopping the service

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systemctl stop rbfeeder
And run only

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rbfeeder

After that the error no longer appears.
Ah, I also have the same error you mentioned about the serial CPU, but that doesn't interfere with anything apparently.