Traceback (most recent call last):


 "/usr/local/lib/python2.7/site-packages/qqbot/qqbotcls.py", line 99, in _call

func(*args, **kwargs)


 "/usr/local/lib/python2.7/site-packages/qqbot/plugins/miniirc.py", line 244, in onQQMessage

self.buddies.add(buddy)


 "/usr/local/lib/python2.7/site-packages/qqbot/plugins/miniirc.py", line 306, in add

if contact.uin in self.uins:
AttributeError: 'NoneType' object has no attribute 'uin'

Traceback (most recent call last):


 "/Users/nrryuya1/work/blockchain/nrryuya/vyper/tests/examples/tokens/ERC20_solidity_compatible/test/erc20_tests_1.py", line 422, in setUp

super().setUp()


 "/Users/nrryuya1/work/blockchain/nrryuya/vyper/tests/examples/tokens/ERC20_solidity_compatible/test/erc20_tests_1.py", line 52, in setUp

self.s.revert(self.initial_state)


 "/Users/nrryuya1/.pyenv/versions/vyper/lib/python3.6/site-packages/ethereum/tools/tester.py", line 297, in revert

self.block.transactions = self.block.transactions[:txcount]


 "/Users/nrryuya1/.pyenv/versions/vyper/lib/python3.6/site-packages/rlp/sedes/serializable.py", line 334, in field_fn_setter

raise AttributeError("can't set attribute")
AttributeError: can't set attribute
