there is an incorrect instruction at Guide: How to build a Cardano Stake Pool - CoinCashew
check how to run a block producing node in the official doc:
https://docs.cardano.org/projects/cardano-node/en/latest/stake-pool-operations/start_your_nodes.html
cardano-node run \
--topology mainnet-topology.json \
--database-path /db \
--socket-path /db/node.socket \
--host-addr <PUBLIC IP> \
--port <PORT> \
--config mainnet-config.json \
--shelley-kes-key kes.skey \
--shelley-vrf-key vrf.skey \
--shelley-operational-certificate node.cert