[backend] Fix cancel-experiment tests

beat/web/backend/tests.py

@@ -345,7 +345,7 @@ class CancelAllExperimentsAPI(BackendAPIBase):
 
     def test_no_access_for_anonymous_user(self):
         response = self.client.get(self.url)
-        self.checkResponse(response, 403)
+        self.checkResponse(response, 302) #redirects to login page
 
 
     def test_no_access_for_non_superuser(self):