This looks similar to #2715 but could have a different cause.
```
2016-06-22 06:30:00,018 140040664910416 ERROR consumers [-] StagedQueueConsumer failed to process message: {'trace_context': , 'trigg…
A couple of times now I've run into an issue with troubleshooting my st2 setup due to my having gone and updated the system_user section of st2.conf and not having restarted.
Lakstorm on Slack has be…