Please provide your hub model (C7, C8, etc.) and its platform version from Settings>Hub Details.
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c7 latest firmware hub started with this error as far back in the logs as i can see and then snowballed with the same error in almost all devices.. not much was responding.. was able to do a reboot and rebuild database.. seems ok now.. any ideas..
before rebooting i tried to look at logs but got 500 error.