unhandled network error

```
Traceback (most recent call last):
File "history.py", line 66, in
socketIO.wait(seconds=1)
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/__init__.py", line 254, in wait
self._process_packets()
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/__init__.py", line 279, in _process_packets
for engineIO_packet in self._transport.recv_packet():
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/transports.py", line 156, in recv_packet
packet_text)
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/parsers.py", line 96, in parse_packet_text
packet_type = int(get_character(packet_text, 0))
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/symmetries.py", line 26, in get_character
return chr(get_byte(x, index))
File "/usr/local/lib/python2.7/dist-packages/socketIO_client/symmetries.py", line 30, in get_byte
return six.indexbytes(x, index)
File "/usr/lib/python2.7/dist-packages/six.py", line 607, in indexbytes
return ord(buf[i])
IndexError: string index out of range

```