Invalid option `--byron-era'

[laplasz]

probably the node has been restarted, and it is in starting phase
check the logs of the node - should be similar like this:

Example of logs of a started node

[X:cardano.node.networkMagic:Notice:5] [2021-05-12 16:28:04.72 UTC] NetworkMagic 764824073 [X:cardano.node.basicInfo.protocol:Notice:5] [2021-05-12 16:28:04.72 UTC] Byron; Shelley [X:cardano.node.basicInfo.version:Notice:5] [2021-05-12 16:28:04.72 UTC] 1.26.2 [X:cardano.node.basicInfo.commit:Notice:5] [2021-05-12 16:28:04.72 UTC] 3531289c9f79eab7ac5d3272ce6e6821504fec4c [X:cardano.node.basicInfo.nodeStartTime:Notice:5] [2021-05-12 16:28:04.72 UTC] 2021-05-12 16:28:04.724671857 UTC [X:cardano.nod…