`Traceback (most recent call last):


 "/home/gridlockdev/Desktop/heroku/grace/env/lib/python3.5/site-packages/django/core/handlers/exception.py", line 41, in inner

response = get_response(request)


 "/home/gridlockdev/Desktop/heroku/grace/env/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response

response = self.process_exception_by_middleware(e, request)


 "/home/gridlockdev/Desktop/heroku/grace/env/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response

response = wrapped_callback(request, *callback_args, **callback_kwargs)


 "/home/gridlockdev/Desktop/heroku/grace/network/views.py", line 104, in geojson_to_shp

render_network()


 "/home/gridlockdev/Desktop/heroku/grace/network/views.py", line 112, in render_network

G = nx.read_shp(directory, simplify=False)


 "/home/gridlockdev/Desktop/heroku/grace/env/lib/python3.5/site-packages/networkx/readwrite/nx_shp.py", line 71, in read_shp

for f in lyr:
TypeError: iter() returned non-iterator of type 'Layer'

Traceback (most recent call last):


 "/usr/lib64/python3.6/site-packages/nose/case.py", line 197, in runTest

self.test(*self.arg)
TypeError: test_format_xml() missing 2 required positional arguments: 'filename' and 'tdata'
