start_mining fyTdh54hYVeRPTJycaSaXZNNEjKzU8HsjgY2Te7ysZCs867AKVVGYsjLxCtxFaAqntdojM5NLsaBRMf 3uiCqHfER2Nv147ppq 2
Unknown command: start_mining
Please use the standalone miner:
./miner --threads [num] --address [address] --log-level=4
Also when mining you need to keep the bbscoind running.