Too many open files with PhantomJS

[ethus3h]

Got this error using grab-site with the PhantomJS integration:

https://twitter.com/tqbf/ on 03-07; 2,068.1 MB in 678,328 resp. at 7.4/s, 15,980 in q.; 5 con. w/ 0 ms delay; igoff
200 OK https://mobile.twitter.com/tqbf/status/684147355394834432?locale=ms
200 OK https://mobile.twitter.com/tqbf/status/684147355394834432?locale=ms
ERROR Proxy error
Traceback (most recent call last):
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/proxy/server.py", line 57, in __call__
    yield From(session())
  File "/home/grabbot/.local/lib/python3.4/site-packages/trollius/tasks.py", line 257, in _step
    result = coro.throw(exc)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/proxy/server.py", line 140, in __call__
    response = yield From(session.fetch(request))
  File "/home/grabbot/.local/lib/python3.4/site-packages/trollius/tasks.py", line 259, in _step
    result = coro.send(value)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/http/client.py", line 87, in fetch
    self._recorder_session.request(request)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/recorder/demux.py", line 47, in request
    session.request(request)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/recorder/warc.py", line 475, in request
    self._child_session.request(request)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/recorder/warc.py", line 554, in request
    self._recorder.write_record(self._request_record)
  File "/home/grabbot/.local/lib/python3.4/site-packages/wpull/recorder/warc.py", line 275, in write_record
    with open(journal_filename, 'w') as file:
OSError: [Errno 24] Too many open files: '/home/grabbot/grabs/twitter.com-tqbf-2016-03-07-4106f27e/twitter.com-tqbf-2016-03-07-4106f27e-00002.warc.gz-wpullinc'
ERROR [Errno 24] Too many open files: '/home/grabbot/grabs/twitter.com-tqbf-2016-03-07-4106f27e/twitter.com-tqbf-2016-03-07-4106f27e-00002.warc.gz-wpullinc'
Finished grab 4106f27eaff4f6bb12f6afc1f408da09 https://twitter.com/tqbf/ with exit code 3
Output is in directory:
/home/grabbot/grabs/twitter.com-tqbf-2016-03-07-4106f27e