InvalidDifficulty

The submitted proof-of-work hash does not meet the required difficulty (the faucet uses a fixed 1,000,000; PoW registration uses the subnet's difficulty). Check the Difficulty storage for the netuid and regenerate work against the current block.

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 InvalidDifficulty.