transaction error

[semyon-dev]

Traceback (most recent call last):
  File "/home/semyon/Programming/Python/bitcoin/main.py", line 8, in <module>
    tx = transactions.create(alice, (bob, 117432))
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/transactions/transactions.py", line 114, in simple_transaction
    inputs, change = self._select_inputs(from_address, amount, n_outputs, min_confirmations=min_confirmations)
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/transactions/transactions.py", line 172, in _select_inputs
    unspents = self.get(address, min_confirmations=min_confirmations)['unspents']
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/transactions/transactions.py", line 84, in get
    txs = self._service.list_transactions(hash, account=account, max_transactions=max_transactions)
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/transactions/services/blockrservice.py", line 43, in list_transactions
    results = self.make_request(url)
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/transactions/services/blockrservice.py", line 33, in make_request
    data = response.json()
  File "/home/semyon/Programming/Python/bitcoin/venv/lib/python3.6/site-packages/requests/models.py", line 896, in json
    return complexjson.loads(self.text, **kwargs)
  File "/usr/lib/python3.6/json/__init__.py", line 354, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.6/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Process finished with exit code 1

code:

from transactions import Transactions
alice = 'mwPGBZJFoiELLADPES6E4JphUbw25Ju923'
bob = 'mySjpEjdrGsfhnmgX7rtcTtb7R9XGauwiV'
transactions = Transactions(testnet=True)
tx = transactions.create(alice, (bob, 6117432))
tx_signed = transactions.sign(tx, 'cTKusFK7wT8eGPXbfqLWJgQUEyg37BJmHpMJJ5ze3S******')
transactions.push(tx_signed)