Error from maelstrom

gistfile1

Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/unittest/case.py", line 327, in run
    testMethod()
  File "/vagrant/gf/tests/controllers/test_orgs.py", line 16, in test_get_organization_root
    retval = self.app.get("/org")
  File "/vagrant/venv/local/lib/python2.7/site-packages/werkzeug/test.py", line 761, in get
    return self.open(*args, **kw)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/testing.py", line 108, in open
    follow_redirects=follow_redirects)
  File "/vagrant/venv/local/lib/python2.7/site-packages/werkzeug/test.py", line 735, in open
    response = self.run_wsgi_app(environ, buffered=buffered)
  File "/vagrant/venv/local/lib/python2.7/site-packages/werkzeug/test.py", line 658, in run_wsgi_app
    rv = run_wsgi_app(self.application, environ, buffered=buffered)
  File "/vagrant/venv/local/lib/python2.7/site-packages/werkzeug/test.py", line 854, in run_wsgi_app
    app_iter = app(environ, start_response)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/vagrant/venv/local/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/vagrant/gf/controllers/user/user.py", line 40, in get_user
    user = Account.get_by_lookup(username)
  File "/vagrant/venv/local/lib/python2.7/site-packages/maelstrom/base.py", line 29, in get_by_lookup
    from gf.lib.db.lookup import LookUp
ImportError: No module named db.lookup