Problem signing transactions with monerojs

Question

I have a problem when trying to sign transactions in monero, using the monerojs library.

This is my code:

async function signAndSendTransaction(toAddress, amount) {

    let wallet = await monerojs.createWalletFull({
      networkType: MoneroNetworkType.TESTNET,
      password: "MoneroRoot",
      mnemonic: "after laptop autumn fixate plus boxes eavesdrop acumen bogeys hectare asylum mammal memoir addicted rebel austere bite lifestyle adapt morsel cousin tinted weekday awesome bite",
      serverUri: "http://127.0.0.1:28081",
    });

    const syncResult = await wallet.sync();
    console.log('Sync progress:', syncResult)
    
    const txConfig = new monerojs.MoneroTxConfig();
    txConfig.setAccountIndex(0); // Indice dell'account da cui inviare la transazione
    txConfig.setAddress(toAddress); // Indirizzo di destinazione
    txConfig.setAmount((ATOMICUNIT_PER_XMR*amount).toString());

    const txSet = await wallet.createTx(txConfig);

    await wallet.signTxs(txSet.getHash());

    let daemon = await monerojs.connectToDaemonRpc({
      uri: "http://127.0.0.1:28081",
    });
    const txHashes = await daemon.submitTxSet(txSet);
    console.log("Transazione inviata con hash:", txHashes[0]);
  }

it gives me this error when signing the transaction (signTxs()):

MoneroError: cannot load unsigned_txset

Is there some process I'm skipping? Online errors of this type with the monerojs library I can't find them.

Answer 1

There's a full example in the documentation of the 3rd party library you're using:

https://github.com/monero-ecosystem/monero-javascript/blob/master/docs/developer_guide/view_only_offline.md