UnboundLocalError: local variable 'ret_query' referenced before assignment

[ukanga]

Internal Server Error: /api/v1/forms/[pk]/export_async.json

UnboundLocalError at /api/v1/forms/[pk]/export_async.json
local variable 'ret_query' referenced before assignment

Request Method: GET
Request URL: https://api.ona.io/api/v1/forms/[pk]/export_async.json?format=csv&query=%7B%22_submission_time%22%3A%20%7B%22%24gte%22%3A%20%222017-01-01T00%3A00%3A00%22%2C%22%24lte%22%3A%20%222017-01-31T23%3A59%3A59%22%7D%7D&win_excel_utf8=false
Django Version: 1.9.5
Python Executable: /..../.virtualenvs/onadata/bin/uwsgi
Python Version: 2.7.6
Python Path: ['/..../.virtualenvs/onadata/src/savreaderwriter/savReaderWriter', '/..../.virtualenvs/onadata/src/savreaderwriter/savReaderWriter/cWriterow', '.', '', '/..../.virtualenvs/onadata/src/django-nose', '/..../.virtualenvs/onadata/src/django-digest', '/..../.virtualenvs/onadata/src/j2xclient', '/..../.virtualenvs/onadata/src/cors-headers', '/..../.virtualenvs/onadata/src/pricing', '/..../.virtualenvs/onadata/src/savreaderwriter', '/..../.virtualenvs/onadata/src/google-export', '/..../.virtualenvs/onadata/lib/python2.7', '/..../.virtualenvs/onadata/lib/python2.7/plat-x86_64-linux-gnu', '/..../.virtualenvs/onadata/lib/python2.7/lib-tk', '/..../.virtualenvs/onadata/lib/python2.7/lib-old', '/..../.virtualenvs/onadata/lib/python2.7/lib-dynload', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/..../.virtualenvs/onadata/local/lib/python2.7/site-packages']
Server time: Tue, 7 Feb 2017 11:38:27 -0500
Installed Applications:
('google_export',
 'pricing',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.gis',
 'registration',
 'django_nose',
 'django_digest',
 'corsheaders',
 'oauth2_provider',
 'rest_framework',
 'rest_framework.authtoken',
 'taggit',
 'readonly',
 'onadata.apps.logger',
 'onadata.apps.viewer',
 'onadata.apps.main',
 'onadata.apps.restservice',
 'onadata.apps.api',
 'guardian',
 'djcelery',
 'onadata.apps.sms_support',
 'onadata.libs',
 'reversion')
Installed Middleware:
('multidb.middleware.PinningRouterMiddleware',
 'onadata.libs.profiling.sql.SqlTimingMiddleware',
 'django.middleware.http.ConditionalGetMiddleware',
 'django.middleware.cache.UpdateCacheMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.cache.FetchFromCacheMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'onadata.libs.utils.middleware.LocaleMiddlewareWithTweaks',
 'django.middleware.csrf.CsrfViewMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'onadata.libs.utils.middleware.HTTPResponseNotAllowedMiddleware',
 'readonly.middleware.DatabaseReadOnlyMiddleware')


Traceback:

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  149.                     response = self.process_exception_by_middleware(e, request)

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  147.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
  58.         return view_func(*args, **kwargs)

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/rest_framework/viewsets.py" in view
  87.             return self.dispatch(request, *args, **kwargs)

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
  466.             response = self.handle_exception(exc)

File "/..../.virtualenvs/onadata/local/lib/python2.7/site-packages/rest_framework/views.py" in dispatch
  463.             response = handler(request, *args, **kwargs)

File "./onadata/apps/api/viewsets/xform_viewset.py" in export_async
  637.             resp = process_async_export(request, xform, export_type, options)

File "./onadata/libs/utils/api_export_tools.py" in process_async_export
  376.                                                      query)

File "./onadata/libs/permissions.py" in filter_queryset_xform_meta_perms_sql
  399.     return ret_query

Exception Type: UnboundLocalError at /api/v1/forms/[pk]/export_async.json
Exception Value: local variable 'ret_query' referenced before assignment
Request information:
GET:
query = u'{"_submission_time": {"$gte": "2017-01-01T00:00:00","$lte": "2017-01-31T23:59:59"}}'
win_excel_utf8 = u'false'
format = u'csv'

POST: No POST data

FILES: No FILES data

COOKIES: No cookie data

Aha! Link: https://ona.aha.io/features/PROD-628