Here's the full error:

WebError Traceback: ⇝ InvariantException: Redefining type 'LastModified'? View as: Interactive | Text | XML (full) URL: http://185.3.94.17/ Module weberror.evalexception:431 in respond view

appiter = self.application(environ, detect_start_response) Module r2.config.middleware:168 in __call_ view return self.app(environ, startresponse) Module r2.config.middleware:279 in __call_ view return self.app(environ, startresponse) Module r2.config.middleware:238 in __call_ view return self.app(environ, startresponse) Module r2.config.middleware:252 in __call_ view return self.app(environ, startresponse) Module r2.config.middleware:372 in __call_ view return self.app(environ, startresponse) Module r2.config.middleware:398 in __call_ view return self.app(environ, customstart_response) Module routes.middleware:130 in __call_ view response = self.app(environ, startresponse) Module pylons.wsgiapp:116 in __call_ view self.setupapp_env(environ, start_response) Module r2.config.middleware:430 in setup_app_env view self.load() Module r2.config.middleware:437 in load view self.load_controllers() Module r2.config.middleware:458 in load_controllers view controllers.load_controllers() Module r2.controllers:42 in load_controllers view from listingcontroller import ListingController Module ?:26 in <module> view from oauth2 import require_oauth2_scope Module ?:30 in <module> view from r2.lib.base import abort Module ?:28 in <module> view from r2.lib.template_helpers import get_domain Module ?:26 in <module> view from r2.models import * Module ?:23 in <module> view from account import * Module ?:35 in <module> view from r2.models.last_modified import LastModified Module ?:32 in <module> view class LastModified(tdb_cassandra.View): Module r2.lib.db.tdb_cassandra:139 in __init_ view raise InvariantException("Redefining type %r?" % (cls._type_prefix)) InvariantException: Redefining type 'LastModified'?