问使用javascript异步函数获取使用json请求的幻象钱包的平衡问题？

EN

Phantom - RPC Error: JsonRpcEngine: Response has no error or result for request:
{
  "jsonrpc": "2.0",
  "id": 1161935556,
  "method": "getBalance",
  "params": [
    "iQKBP3tSX6g3j6pS6g3LuzhoqTQKBP3tSX6g33tSX6g3j6pS6g"
  ]
}

// get wallet provider, phantom
const get_provider = () => {
  if ("solana" in window) {
    const provider = window.solana;
    if (provider.isPhantom) {
      return provider;
    }
  }
  window.open("https://phantom.app/", "_blank");
};

// async get wallet balance
async function phantom_balance() {
  // alt window.solana
  const phantom = get_provider();
  console.log("Still Connected: " + phantom.isConnected);
  if (phantom.isConnected !== false) {
    const wallet_address = phantom.publicKey.toString();
    console.log("Getting Balance For: " + wallet_address);
 
    // json-rpc request (ERROR!)
      const balance = await phantom.request({
        method: "getBalance",
        params: [wallet_address]
        })
        .then(function(data) {
          console.log(data);
        }).catch(function(e) {
          console.log(e);
        });
    
  }
}

    const balance = await phantom.getBalance(wallet_address)
      .then(function(data) {
        console.log(data);
      }).catch(function(e) {
        console.log(e);
      });