# Longhorn Backup UI 504 timeout

**URL:** <https://forums.suse.com/t/longhorn-backup-ui-504-timeout/19193>\
**Category:** SUSE Storage\
**Created:** [January 7, 2021, 6:16am UTC](https://forums.suse.com/t/longhorn-backup-ui-504-timeout/19193 "2021-01-07T06:16:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ajithen](https://avatars.discourse-cdn.com/v4/letter/a/958977/32.png) [@ajithen](https://forums.suse.com/u/ajithen)\
**Post date:** [January 7, 2021, 6:16am UTC](https://forums.suse.com/t/longhorn-backup-ui-504-timeout/19193/1 "2021-01-07T06:16:37Z")

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I am getting 504 error while accessing Backup UI, Still I am not created any backup / snapshot. Please check the error log below

```auto
level=warning msg="backup store monitor: failed to list backup volumes in s3://BUCKETNAME@REGION/: 
error listing backup volumes: 
Timeout executing: /var/lib/longhorn/engine-binaries/pkgxxxxxxx-6000-lio-leng-v1.0.2/longhorn 
[backup ls --volume-only s3://BUCKETNAME@REGION/]

```

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<div class="post-metadata">

**Author:** ![shuo-wu](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/shuo-wu/32/6426_2.png) [@shuo-wu](https://forums.suse.com/u/shuo-wu)\
**Post date:** [January 8, 2021, 2:51am UTC](https://forums.suse.com/t/longhorn-backup-ui-504-timeout/19193/2 "2021-01-08T02:51:09Z")

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Can you check if you can use cli `aws2` to fetch info/data from your backup target? BTW, a snapshot creation is required before a backup creation, but creating snapshots itself doesn’t require a backup target.