Errors/Chain errors
SubnetNotExists
Use an existing netuid; `btcli subnets list` shows valid ones
The netuid passed to the call does not correspond to a registered subnet. Verify the netuid argument against NetworksAdded or btcli subnets list; the subnet may also have been dissolved.
Declared by the SubtensorModule pallet; it classifies to the semantic code subnet_not_exists.
Remediation
Use an existing netuid; btcli subnets list shows valid ones
The same explanation is available in the terminal: btcli explain SubnetNotExists.