Traceback (most recent call last):


 "ethSender_testfile.py", line 64, in <module>

send_token()


 "ethSender_testfile.py", line 54, in send_token

print this_contract.call().name()


 "eth_tests/venv/lib/python2.7/site-packages/eth_utils/string.py", line 85, in inner

return force_obj_to_text(fn(*args, **kwargs))


 "eth_tests/venv/lib/python2.7/site-packages/web3/contract.py", line 759, in call_contract_function

transaction=transaction,


 "eth_tests/venv/lib/python2.7/site-packages/web3/utils/decorators.py", line 12, in _wrapper

return self.method(obj, *args, **kwargs)


 "eth_tests/venv/lib/python2.7/site-packages/web3/contract.py", line 680, in _prepare_transaction

fn_kwargs,


 "eth_tests/venv/lib/python2.7/site-packages/eth_utils/string.py", line 85, in inner

return force_obj_to_text(fn(*args, **kwargs))


 "eth_tests/venv/lib/python2.7/site-packages/web3/contract.py", line 719, in _encode_transaction_data

fn_name, args, kwargs,


 "eth_tests/venv/lib/python2.7/site-packages/web3/contract.py", line 648, in _get_function_info

fn_abi = cls._find_matching_fn_abi(fn_name, args, kwargs)


 "eth_tests/venv/lib/python2.7/site-packages/web3/contract.py", line 601, in _find_matching_fn_abi

function_candidates = filter_by_type('function', cls.abi)


 "eth_tests/venv/lib/python2.7/site-packages/web3/utils/abi.py", line 23, in filter_by_type

return [abi for abi in contract_abi if abi['type'] == _type]
TypeError: 'NoneType' object is not iterable

Addon error: Traceback (most recent call last):


 "mitmproxy\addons\view.py", line 612, in update


 "blinker\base.py", line 266, in send


 "blinker\base.py", line 266, in <listcomp>


 "mitmproxy\tools\web\master.py", line 57, in _sig_view_update


 "mitmproxy\tools\web\app.py", line 214, in broadcast


 "json\__init__.py", line 234, in dumps


 "json\encoder.py", line 199, in encode


 "json\encoder.py", line 257, in iterencode


 "json\encoder.py", line 179, in default
TypeError: Object of type bytes is not JSON serializable
