Errors/Chain errors
InvalidPort
Check the argument values against the operation schema
The port argument to serve_axon or serve_prometheus is 0, which is rejected. Check the miner or client axon configuration and serve on a non-zero port.
Declared by the SubtensorModule pallet; it classifies to the semantic code invalid_argument.
Remediation
Check the argument values against the operation schema
The same explanation is available in the terminal: btcli explain InvalidPort.