The SDK cannot claim faucet water in the blockchain.
Error: API Error: 429 POST /v2/gas - “<meta charset="utf-8"><meta name=viewport content="width=device-width, initial-scale=1">429429 Too Many Requests”
This could be expected depending on how many requests you have made within 24 hours. If you wish to have more testnet SUI, try https://faucet.n1stake.com/ or https://faucet.sui.io