Sunsynk Error Code F10: Aux Powerboard Failure

Hi all.

I have a 5kw Sunsynk paired up with one Hubble AM2 battery.

The unit acts as a UPS in the meantime before I add another battery and some panels.

Today I received the F10 Error. Does anyone know what causes this error and how it can be prevented?

Thank you.

above from Sunsynk installer group

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