Sometimes a user cannot vote on an election.
They see the message:
```
You must log in to vote in this election - please try following the link from your Special:SecurePoll on your local Wikimedia site.
```
This seems to be intermittent. If the user tries again, they are often successful.
Possibly related log message:
==== Error ====
* mwversion: `1.37.0-wmf.18`
* reqId: `5cc88050-9480-4e98-911d-e38a7704aa8c`
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2021-08-12T13:53:43.000Z',to:'2021-08-13T16:36:32.939Z'))&_a=(query:(query_string:(query:'reqId:%225cc88050-9480-4e98-911d-e38a7704aa8c%22'))) | Find reqId in Logstash ]]
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:now-30d,to:now))&_a=(query:(query_string:(query:'normalized_message:%22Session%20%22%7Bsession%7D%22:%20Metadata%20has%20an%20anonymous%20user,%20but%20a%20non-anon%20user%20was%20provided%22'))) | Find normalized_message in Logstash ]]
```name=normalized_message
Session "{session}": Metadata has an anonymous user, but a non-anon user was provided
```
```
name=exception.trace,lines=10
```
From page https://vote.wikimedia.org/wiki/Special:SecurePoll/vote/1101.
==== Impact ====
Sometimes a user cannot vote on an election.
They see the message:
```
You must log in to vote in this election - please try following the link from your Special:SecurePoll on your local Wikimedia site.
```
This seems to be intermittent. If the user tries again, they are often successful.