fix additional_events logic

docs/docs/connectors/custom-connectors.mdx

@@ -48,7 +48,11 @@ the host and port with the appropriate values from your running Rasa X or Rasa O
 ## The `blueprint` method
 
 The `blueprint` method
+<<<<<<< HEAD
 needs to create a [sanic blueprint](https://sanic.readthedocs.io/en/stable/sanic/blueprints.html#blueprints)
+=======
+needs to create a [sanic blueprint](https://sanicframework.org/en/guide/best-practices/blueprints.html#overview)
+>>>>>>> ad729fa3d02... sanic docs have moved update URLs in docs
 that can be attached to a sanic server. 
 Your blueprint should have at least the two routes: `health` on the route `/`,
 and `receive` on the route `/webhook` (see example custom channel below).

docs/docs/http-api.mdx

@@ -39,7 +39,7 @@ By default, the HTTP server runs as a single process. You can change the number
 of worker processes using the `SANIC_WORKERS` environment variable. It is
 recommended that you set the number of workers to the number of available CPU cores
 (check out the
-[Sanic docs](https://sanic.readthedocs.io/en/stable/sanic/deploying.html#workers)
+[Sanic docs](https://sanicframework.org/en/guide/deployment/running.html#workers)
 for more details). This will only work in combination with the
 `RedisLockStore` (see [Lock Stores](./lock-stores.mdx).
 

docs/docs/migration-guide.mdx

@@ -1085,7 +1085,7 @@ model before trying to use it with this improved version.
 * The `--num_threads` parameter was removed from the `run` command. The
   server will always run single-threaded, but will now run asynchronously. If you want to
   make use of multiple processes, feel free to check out the [Sanic server
-  documentation](https://sanic.readthedocs.io/en/stable/sanic/deploying.html#running-via-gunicorn).
+  documentation](https://sanicframework.org/en/guide/deployment/running.html#gunicorn).
 
 * To avoid conflicts in script parameter names, connectors in the `run` command now need to be specified with
   `--connector`, as `-c` is no longer supported. The maximum history in the `rasa visualize` command needs to be

rasa/core/tracker_store.py

@@ -1131,9 +1131,10 @@ def _additional_events(
     ) -> Iterator:
         """Return events from the tracker which aren't currently stored."""
 
-
         number_of_events_since_last_session = self._event_query(
-            session, tracker.sender_id, fetch_events_from_all_sessions=self.retrieve_events_from_previous_conversation_sessions
+            session,
+            tracker.sender_id,
+            fetch_events_from_all_sessions=self.retrieve_events_from_previous_conversation_sessions,
         ).count()
 
         return itertools.islice(