As I understand, the babe epoch config comes with the option of
SecondaryVRF slots, which is more or less like PoA in the case that no primary block producers are available.
If this is correct, how can I set these Secondary block producers? Do we set them in the Genesis configuration?
In a staking chain, do these secondary block producers require a stake backing them for block production?
I ask this because right now I have a nPoS chain running which stalled since only one validator was online out of 3, and at epoch change I get this:
Error with block built on 0xb4b4...ff08: ClientImport("Unexpected epoch change")
and I would like to fix it, because I know substrate node can run with one validator in the