• weberror.evalexception : 431, in respond

  app_iter = self.application(environ, detect_start_response)
  

• repoze.tm : 19, in __call__

  result = self.application(environ, save_status_and_headers)
  

• repoze.who.middleware : 107, in __call__

  app_iter = app(environ, wrapper.wrap_start_response)
  

• beaker.middleware : 70, in __call__

  return self.app(environ, start_response)
  

• beaker.middleware : 149, in __call__

  return self.wrap_app(environ, session_start_response)
  

• routes.middleware : 130, in __call__

  response = self.app(environ, start_response)
  

• tw2.core.middleware : 137, in __call__

  resp = req.get_response(self.app)
  

• webob : 1325, in get_response

  No operation context
  

• webob : 1293, in call_application

  No operation context
  

• mvp.core.middleware.pypesstaticapp : 39, in __call__

  return self.app(environ, start_response)
  

• pylons.wsgiapp : 107, in __call__

  response = self.dispatch(controller, environ, start_response)
  

• pylons.wsgiapp : 301, in dispatch

  return controller(environ, start_response)
  

• mvp.base.controllers.base : 73, in __call__

  return WSGIController.__call__(self, environ, start_response)
  

• pylons.controllers.core : 211, in __call__

  response = self._dispatch_call()
  

• pylons.controllers.core : 162, in _dispatch_call

  response = self._inspect_call(func)
  

• pylons.controllers.core : 105, in _inspect_call

  result = self._perform_call(func, args)
  

• mvp.base.controllers.base : 24, in _perform_call

  return func(**args)
  

• ? : 2, in upload

  No operation context
  

• mvp.core.decorators : 30, in wrap

  return func(*args, **kw)
  

• mvp.base.controllers.teams : 85, in upload

  team.set_image_data(image_file, LandscapeImage)
  

• mvp.base.model.imageable : 14, in set_image_data

  self.image.image_data = fs
  

• tw2.upload.model.image : 181, in image_data

  self.default_crop()
  

• tw2.upload.model.image : 189, in default_crop

  x1, y1, x2, y2 = self.image_broker.default_crop()
  

• tw2.upload.model.image : 493, in default_crop

  raise NotImplementedError('Cannot call crop without having PIL installed')
  

NotImplementedError: Cannot call crop without having PIL installed