IndexError, possibly a timeout problem

[philastrophist]

This happens randomly to big write queries I submit, with no way of predicting which query will fail.

Traceback (most recent call last):
  File "/tmp/pycharm_project_3/weaveio/graph.py", line 103, in _execute
    return self.neograph.auto(readonly=not self.write_allowed).run(cypher, parameters=parameters)
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/database.py", line 980, in run
    readonly=self.readonly)
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/__init__.py", line 1343, in auto_run
    cx.pull(result, n=pull)
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 943, in pull
    self._sync(response)
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 747, in _sync
    self._wait(response)
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 742, in _wait
    self._fetch()
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 717, in _fetch
    tag, fields = self.read_message()
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 644, in read_message
    tag, fields = self._reader.read_message()
  File "/home/sread/miniconda2/envs/weaveio/lib/python3.7/site-packages/py2neo/client/bolt.py", line 96, in read_message
    _, n = divmod(message[0], 0x10)
IndexError: index out of range

referenced in #934