Errors about Aptos TS SDK

[simonwang01]

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Describe your question in detail.

Hi, I am using the Aptos TS SDK to build a transaction and utilizing the offline signing service to sign the transaction. Below is my code:

const { Account, Aptos, AptosConfig, Network, AccountAddress } = require("@aptos-labs/ts-sdk");
const rpc_url = "https://api.mainnet.aptoslabs.com";
const config = new AptosConfig({ network: Network.MAINNET, fullnode: rpc_url + "/v1" });
const aptos = new Aptos(config);
const axios = require('axios');

async function main() {
    const account = AccountAddress.fromString("0x11bad2c3d3f38902209a86a2589dd53de3584ba148ae11b712e92039908b141c");
    const api_url = 'https://app.thala.fi/api/panora?fromTokenAddress=0xf22bede237a07e121b56d91a491eb7bcdfd1f5907926a9e58338f964a01b17fa::asset::USDT&toTokenAddress=0x1::aptos_coin::AptosCoin&toWalletAddress=0x11bad2c3d3f38902209a86a2589dd53de3584ba148ae11b712e92039908b141c&slippagePercentage=5.0&fromTokenAmount=0.1';
    const response = await axios.get(api_url); 
    let tx_data = response.data.data.quotes[0].txData;
    console.log("tx_data: ", tx_data);

    // build transaction
    const transaction = await aptos.transaction.build.simple({
        sender: Buffer.from(account.data).toString('hex'),
        data: {
            function: tx_data.function,
            typeArguments: tx_data.type_arguments,
            functionArguments: tx_data.arguments,
        },
    });
    console.log("transaction: ", transaction);

    let rawTransaction = transaction.rawTransaction;
    let res = transaction.toStringWithoutPrefix();
    console.log("res: ", res);
    let bytes = "b5e97db07fa0bd0e5598aa3643a9bc6f6693bddc1a9fec9e674a461eaa00b193" + res
    const sign_url = 'https://My_offline_signature_service';
    const sign_data = {
        transaction_buffer: bytes,
    };
    // sign_response contains public_key and signature
    const sign_response = await axios.post(sign_url, sign_data, {
        headers: {
          'Content-Type': 'application/json',
        },
    });
    const submitTransactionSignature = {
        type: "ed25519_signature",
        public_key: sign_response.data.data.public_key,
        signature: sign_response.data.data.signature,
    };
    const arguments = tx_data.arguments.map(argument => {
        return argument === null ? {vec:[]} : argument;
    });
    const encodeSubmissionDataPayload = {
        type: "entry_function_payload",
        function: tx_data.function,
        type_arguments: tx_data.type_arguments,
        arguments: arguments,
        // arguments: tx_data.arguments,
    };
    const transactions_data = {
        sender: Buffer.from(rawTransaction.sender.data).toString('hex'),
        sequence_number: rawTransaction.sequence_number.toString(),
        max_gas_amount: "140",
        gas_unit_price: '100',
        expiration_timestamp_secs: '1740331094',
        payload: encodeSubmissionDataPayload,
        signature: submitTransactionSignature,
    };
    console.log("transactions_data ", transactions_data);
    const transactions_url = rpc_url + "/v1/transactions";
    const transactions_response = await axios.post(transactions_url, transactions_data, {
        headers: {
          'Content-Type': 'application/json',
        },
    });
    console.log("transactions_response: ", transactions_response.data);
}

main();

However, I received the following error when executing:

{
  message: 'Failed to create SignedTransaction from SubmitTransactionRequest: Failed to parse transaction payload: parse arguments[0] failed, expect string<move_struct_tag_id>, caused by error: Type layouts cannot contain signer',
  error_code: 'invalid_input',
  vm_error_code: null
}

Could you please help me resolve this issue?

Below is the transaction that was successfully executed. It may provide you with more information:
https://explorer.aptoslabs.com/txn/2246186483/userTxnOverview?network=mainnet

What error, if any, are you getting?

{
  message: 'Failed to create SignedTransaction from SubmitTransactionRequest: Failed to parse transaction payload: parse arguments[0] failed, expect string<move_struct_tag_id>, caused by error: Type layouts cannot contain signer',
  error_code: 'invalid_input',
  vm_error_code: null
}

What have you tried or looked at? Or how can we reproduce the error?

No response

Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

TypeScript SDK

Describe your environment or tooling in detail

No response

[simonwang01]

I found a solution:
https://github.com/aptos-labs/aptos-ts-sdk/blob/main/examples/typescript/external_signing.ts