Uncaught (in promise) Error: Broadcasting transaction failed with code 18 (codespace: sdk). Log: must contain at least one message: invalid request

[MkMarko]

Can someone help me or provide me with a sample document? I am testing a simple transfer function, but it keeps showing an error message and pops up KEPLR authorization transfer, but it has not been successful

[MkMarko]

The transfer information is identical to that of keplr, but an error is reported

[MkMarko]

{
  "account_number": "193209",
  "chain_id": "sentinelhub-2",
  "fee": {
    "gas": "86560",
    "amount": [
      {
        "amount": "21640",
        "denom": "udvpn"
      }
    ]
  },
  "memo": "测试",
  "msgs": [
    {
      "type": "cosmos-sdk/MsgSend",
      "value": {
        "amount": [
          {
            "amount": "1000000",
            "denom": "udvpn"
          }
        ],
        "from_address": "sent1rtpugzgumc0gjvc7wn60cd869wuh00jvs7ea6a",
        "to_address": "sent1z8vnu648wh2lyuyzm2zwk6jqz9s6g26h42v2gp"
      }
    }
  ],
  "sequence": "335"
}

This is the data before signing

[MkMarko]

This is my JavaScript code

import { SigningStargateClient } from "@cosmjs/stargate";
import { Tendermint34Client } from '@cosmjs/tendermint-rpc';

export default {
  data() {
    return {
      title: "Keplr授权",
      someObject: {}
    }
  },
  methods: {
    async run() {
            if (!window.keplr) {
            	console.warn('你没有安装keplr');
            } else {
                const chainId = "sentinelhub-2";
   
                await window.keplr.enable(chainId);
            
                const offlineSigner = window.keplr.getOfflineSigner(chainId);
         
                const accounts = await offlineSigner.getAccounts();
                
                const tendermintClient = await Tendermint34Client.connect('https://sentinel-rpc.publicnode.com:443');

    //             // Initialize the gaia api with the offline signer that is injected by Keplr extension.
                const cosmJS = new SigningStargateClient(
                        tendermintClient,
                        accounts[0].address,
                        offlineSigner);
                
                console.log(cosmJS.getAllBalances(accounts[0].address))
                
                const sendMsg = {
                  type: "cosmos-sdk/MsgSend",
                  value: {
                    from_address: accounts[0].address,
                    to_address: "sent1z8vnu648wh2lyuyzm2zwk6jqz9s6g26h42v2gp", // 收款人的地址
                    amount: [
                      {
                        denom: "udvpn", // 货币单位
                        amount: "1000000", // 转账数量，注意这是以最小单位计数的，所以这是0.001 ATOM
                      },
                    ],
                  },
                };
                
                const fee = {
                  amount: [
                    {
                      denom: "udvpn",
                      amount: "86560", // 手续费，也是以最小单位计数的，所以这是0.002 ATOM
                    },
                  ],
                  gas: "86560", // Gas，这是执行交易所需的计算资源的估计
                };
                
                const memo = "测试"; // 你可以在这里添加一些备注信息
                
                let { accountNumber, sequence } = await cosmJS.getSequence(accounts[0].address);
                
                sequence = sequence.toString();
                 accountNumber = accountNumber.toString();
                
                const signDoc = {
                  chain_id: chainId,
                  account_number: accountNumber,
                  sequence,
                  fee,
                  msgs: [sendMsg],
                  memo,
                };
                
                const { signed, signature } = await offlineSigner.sign(accounts[0].address, signDoc);
                
                           
                const signedTx = {
                  msg: [sendMsg],
                  fee,
                  memo,
                  signatures: [signature],
                };
                
                const result = await cosmJS.broadcastTx(signedTx);
                console.log(result);
        }
    }
  },
  mounted() {
    this.run();
  }
}
</script>```

[MkMarko]

I tried to transfer to Atom but was unsuccessful. After modifying it, I also failed to transfer to DVPN