Traceback (most recent call last):


 "/usr/local/bin/weasyprint", line 11, in <module>

sys.exit(main())


 "/usr/local/lib/python3.4/dist-packages/weasyprint/__main__.py", line 176, in main

media_type=args.media_type)


 "/usr/local/lib/python3.4/dist-packages/weasyprint/__init__.py", line 88, in __init__

with result as (source_type, source, base_url, protocol_encoding):


 "/usr/lib/python3.4/contextlib.py", line 59, in __enter__

return next(self.gen)


 "/usr/local/lib/python3.4/dist-packages/weasyprint/__init__.py", line 333, in _select_source

with result as result:


 "/usr/lib/python3.4/contextlib.py", line 59, in __enter__

return next(self.gen)


 "/usr/local/lib/python3.4/dist-packages/weasyprint/__init__.py", line 341, in _select_source

with fetch(url_fetcher, url) as result:


 "/usr/lib/python3.4/contextlib.py", line 59, in __enter__

return next(self.gen)


 "/usr/local/lib/python3.4/dist-packages/weasyprint/urls.py", line 291, in fetch

raise URLFetchingError('%s: %s' % (name, value) if value else name)
weasyprint.urls.URLFetchingError: URLError: <urlopen error [Errno -2] Name or service not known>

Traceback (most recent call last):


 "/opt/conda/lib/python3.6/site-packages/jupyterhub/handlers/base.py", line 889, in spawn_single_user

timedelta(seconds=self.slow_spawn_timeout), finish_spawn_future
tornado.util.TimeoutError: Timeout
