stellar-transaction-Transaction Malformed

error.txt

Master account  Account {
  address: 'GBRPYHIL2CI3FNQ4BXLFMNDLFJUNPU2HY3ZMFSHONUCEOASW7QC7OX2H',
  sequence: 7228 }
sendTransaction input 
 AAAAAGL8HQvQkbK2HA3WVjRrKmjX00fG8sLI7m0ERwJW/AX3AAAAZAAAAAAAABw9AAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAOb6T+y5d1nK2IjqE2YKblMLCfSfEDlyHXdyRUNGh7pAAAAkYTnKgAAAAAAAAAAABVvwF9wAAAECXnQqBppNjWJpLs3Q68lgNvQpuS4lOZ5GJWngB/zlnFxNWwUg1ITGdc3nBX7h1r2/o9c5DtP5ppg/7Qspozp0A
sendTransaction
 { data: 
   { type: 'https://stellar.org/horizon-errors/transaction_malformed',
     title: 'Transaction Malformed',
     status: 400,
     detail: 'TODO',
     instance: 'horizon-testnet-001.prd.stellar001.internal.stellar-ops.com/IxhaI70Tqo-003266',
     extras: { envelope_xdr: 'AAAAAGL8HQvQkbK2HA3WVjRrKmjX00fG8sLI7m0ERwJW/AX3AAAAZAAAAAAAABw9AAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAOb6T y5d1nK2IjqE2YKblMLCfSfEDlyHXdyRUNGh7pAAAAkYTnKgAAAAAAAAAAABVvwF9wAAAECXnQqBppNjWJpLs3Q68lgNvQpuS4lOZ5GJWngB/zlnFxNWwUg1ITGdc3nBX7h1r2/o9c5DtP5ppg/7Qspozp0A' } },
  status: 400,
  statusText: 'Bad Request',
  headers: 
   { 'content-type': 'application/problem+json',
     'x-ratelimit-limit': '72000',
     'x-ratelimit-remaining': '71962',
     'x-ratelimit-reset': '1841',
     date: 'Mon, 09 Nov 2015 18:36:15 GMT',
     'content-length': '538',
     connection: 'close' },
  config: 
   { headers: {},
     timeout: 0,
     transformRequest: [ [Function] ],
     transformResponse: [ [Function] ],
     method: 'post',
     url: 'https://horizon-testnet.stellar.org/transactions',
     data: 'tx=AAAAAGL8HQvQkbK2HA3WVjRrKmjX00fG8sLI7m0ERwJW/AX3AAAAZAAAAAAAABw9AAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAOb6T+y5d1nK2IjqE2YKblMLCfSfEDlyHXdyRUNGh7pAAAAkYTnKgAAAAAAAAAAABVvwF9wAAAECXnQqBppNjWJpLs3Q68lgNvQpuS4lOZ5GJWngB/zlnFxNWwUg1ITGdc3nBX7h1r2/o9c5DtP5ppg/7Qspozp0A',
     withCredentials: undefined } }

send_transaction.js

let StellarBase = require('../../src/index');
let assert = require('assert');
let Promise = require('bluebird');
let axios = require('axios');
let util = require('util');

let baseUrl = 'https://horizon-testnet.stellar.org';
let keyPairSource = StellarBase.Keypair.fromSeed('SCAAUH3T2ZOBYO56V2QRIG4GX7YLYLG6T3IEMDZY4REURV6JIMPJK2AW');
let keyPairDest = StellarBase.Keypair.random();

describe('transactions end to end', function() {
  it("send transaction to itself, Invalid sequence number", function(done) {
    // Invalid sequence number
    let account = new StellarBase.Account(keyPairSource.address(), 0);
    console.log(util.inspect(account));
    var destination = keyPairDest.address();
    let paymentOption = {
            destination: destination,
            asset: StellarBase.Asset.native(),
            amount: "5"
    };

    let operation = StellarBase.Operation.payment(paymentOption);
    let input = new StellarBase.TransactionBuilder(account)
      .addOperation(operation)
      .addSigner(keyPairSource)
      .build()
      .toEnvelope()
      .toXDR('base64');
    input = encodeURIComponent(input);
    console.log('sendTransaction input \n', input);
    axios.post(baseUrl + '/transactions',
        `tx=${input}`
      )
      .then(function(response) {
        console.log('sendTransaction\n', response.data);
        assert(response.data);
        assert.equal(response.data.result, 'received');
        assert(response.data.hash);
        done();
      })
      .catch(function(error) {
        console.error('sendTransaction\n', error);
        if (error.data.error) {
          var errorMessage = StellarBase.xdr.TransactionResult.fromXDR(new Buffer(error.data.error, "base64"));
          console.error('sendTransaction message\n', JSON.stringify(errorMessage, null, 4));
        }
        done(error)
      })

  })
});