how to withdraw ustc from anchor protocol, through '@terra-money/terra.js'. 🙏🙏🙏

[mnuestc]

this is my whole code:

but it always failed with "message: "failed to execute message; message index: 0: unrecognized wasm message type: *legacy.MsgExecuteContract: unknown request [CosmWasm/wasmd@v0.30.0/x/wasm/handler.go:44]","

is classc url lcd connected problm?

`import { LCDClient, MnemonicKey, MsgExecuteContract } from '@terra-money/terra.js';

const mk = new MnemonicKey({
mnemonic: '****'
})

// connect to localterra
const terra = new LCDClient({
URL: 'https://lcd.terra.dev',
chainID: 'columbus-5',
isClassic: true
});

const wallet = terra.wallet(mk);
console.log(wallet.key.accAddress);

const execute = new MsgExecuteContract(
wallet.key.accAddress, // sender
"terra1hzh9vpxhsk8253se0vv5jj6etdvxu3nv8z07zu", // aUst contract
{
"send": {
"msg": "eyJyZWRlZW1fc3RhYmxlIjp7fX0=",
"amount": "18995960848",
"contract": "terra1sepfj7s0aeg5967uxnfk4thzlerrsktkpelm5s"
}
},
{ uluna: 509008 } // coins
);

const executeTx = await wallet.createAndSignTx({
msgs: [execute]
});

const executeTxResult = await terra.tx.broadcast(executeTx);`