# EventNotDispatched error while tracking logs in Aspects **URL:** \ **Category:** Site Operations Help\ **Tags:** tutor, aspects\ **Created:** [October 9, 2025, 10:21am UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347 "2025-10-09T10:21:00Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Yago](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/yago/32/367_2.png) [@Yago](https://discuss.openedx.org/u/Yago)\ **Post date:** [October 9, 2025, 10:21am UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347/1 "2025-10-09T10:21:00Z")
Hello! While I was running `transform_tracking_logs` command in LMS, [as suggested in here](https://discuss.openedx.org/t/aspects-superset-is-not-showing-old-enrollments/16884/2), I faced some intercalated errors in `event_routing_backends.tasks.dispatch_bulk_events` celery tasks (see the [Flower monitor](https://flower.readthedocs.io/en/latest/) screenshot below): ![image](https://us1.discourse-cdn.com/flex020/uploads/openedx/original/2X/3/34069e857c2d98fd39b7657f003427d9e4ff44a2.png) You can see the error in detail here: > ```auto > Traceback (most recent call last): > File "/openedx/venv/lib/python3.11/site-packages/celery/app/trace.py", line 453, in trace_task > R = retval = fun(*args, **kwargs) > ^^^^^^^^^^^^^^^^^^^^ > File "/openedx/venv/lib/python3.11/site-packages/sentry_sdk/utils.py", line 1816, in runner > return sentry_patched_function(*args, **kwargs) > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > File "/openedx/venv/lib/python3.11/site-packages/sentry_sdk/integrations/celery/ __init__.py", line 416, in _inner > reraise(*exc_info) > File "/openedx/venv/lib/python3.11/site-packages/sentry_sdk/utils.py", line 1751, in reraise > raise value > File "/openedx/venv/lib/python3.11/site-packages/sentry_sdk/integrations/celery/ __init__.py", line 411, in _inner > return f(*args, **kwargs) > ^^^^^^^^^^^^^^^^^^ > File "/openedx/venv/lib/python3.11/site-packages/celery/app/trace.py", line 736, in __protected_call__ > return self.run(*args, **kwargs) > ^^^^^^^^^^^^^^^^^^^^^^^^^ > File "/openedx/venv/lib/python3.11/site-packages/event_routing_backends/tasks.py", line 106, in dispatch_bulk_events > bulk_send_events(self, events, router_type, host_config) > File "/openedx/venv/lib/python3.11/site-packages/event_routing_backends/tasks.py", line 147, in bulk_send_events > raise task.retry(exc=exc, countdown=getattr(settings, 'EVENT_ROUTING_BACKEND_COUNTDOWN', 30), > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > File "/openedx/venv/lib/python3.11/site-packages/celery/app/task.py", line 736, in retry > raise_with_context(exc) > File "/openedx/venv/lib/python3.11/site-packages/event_routing_backends/tasks.py", line 127, in bulk_send_events > client.bulk_send(events) > File "/openedx/venv/lib/python3.11/site-packages/event_routing_backends/utils/xapi_lrs_client.py", line 103, in bulk_send > raise EventNotDispatched > event_routing_backends.processors.transformer_utils.exceptions.EventNotDispatched > > ``` The fact is that I need to run this command within a huge amount of data. How can I do it? Thanks in advance! _PD: this error only applies when running the `transform_tracking_logs` command with a huge amount of data. When Aspects run this celery task automatically this error is never shown._ ---
**Author:** ![TyHob](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/tyhob/32/7930_2.png) [@TyHob](https://discuss.openedx.org/u/TyHob)\ **Post date:** [October 9, 2025, 12:14pm UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347/2 "2025-10-09T12:14:19Z")
Hi @Yago , are you seeing anything in the Ralph logs or slowness on the Ralph side? This looks like some kind of issue getting the events to Ralph, possibly sending events faster than it’s configured to handle. ---
**Author:** ![Yago](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/yago/32/367_2.png) [@Yago](https://discuss.openedx.org/u/Yago)\ **Post date:** [October 9, 2025, 2:00pm UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347/3 "2025-10-09T14:00:48Z")
Hi @TyHob ! Yes, you are right, Ralph is showing errors like these: ```apache 158434 ralph-1 | 2025-10-07 11:14:32,148 INFO: 172.18.0.13:56252 - "POST /xAPI/statements HTTP/1.1" 200 OK 158435 ralph-1 | Poco::Exception. Code: 1000, e.code() = 0, HTML Form Exception: Field value too long (version 25.3.6.56 (official build)) 158436 ralph-1 | 158437 ralph-1 | 2025-10-07 11:14:36,075 ERROR: Failed to read documents: :HTTPDriver for http://db-openedx.ti.uam.es:8123 returned response code 500) 158438 ralph-1 | Poco::Exception. Code: 1000, e.code() = 0, HTML Form Exception: Field value too long (version 25.3.6.56 (official build)) 158439 ralph-1 | 158440 ralph-1 | 2025-10-07 11:14:36,075 ERROR: Failed to read from ClickHouse 158441 ralph-1 | 2025-10-07 11:14:36,075 INFO: 172.18.0.13:42270 - "POST /xAPI/statements HTTP/1.1" 500 Internal Server Error ``` Even thought the error looks like some value is too long, maybe the problem is that Ralph cannot handle such amount of data at the same time. I will try to run the command over small bunches of data instead of a large amount of files at the same time. I will post here my conclusion Thanks again, regards! ---
**Author:** ![Yago](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/yago/32/367_2.png) [@Yago](https://discuss.openedx.org/u/Yago)\ **Post date:** [October 14, 2025, 11:17am UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347/4 "2025-10-14T11:17:48Z")
Hello @TyHob I finally managed to launch the `python manage.py lms transform_tracking_logs ` 🙌 Monitoring both Ralph and Redis gave me the clue: First of all I splitted the file into multiple files, because there was a problem with memory saturation cause `tracking.logs` was \>5GB I tried to go 1 by 1, but when the files where higher than 1000 lines some kind of error was thrown. And I went into more than 10000 files, so it wasn’t able to handle. So I worked with the prefix parameter to work on bunches of 500 files at the same time, and added the following parameters for better performance: `--sleep_between_batches_secs 10 ` `--batch_size 500` And so it worked! 👏 @TyHob thanks for your support, have a nice day! ---
**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/openedx/original/2X/e/e0015f89e879bc75925b71fd11133ab15fe98297.png) [@system](https://discuss.openedx.org/u/system)\ **Post date:** [January 12, 2026, 11:18am UTC](https://discuss.openedx.org/t/eventnotdispatched-error-while-tracking-logs-in-aspects/17347/5 "2026-01-12T11:18:28Z")
Closed on January 12, 2026, 11:18am UTC This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.