# Backup upload failure due to uninitialized TransferManager

**URL:** https://meta.discourse.org/t/backup-upload-failure-due-to-uninitialized-transfermanager/409303
**Category:** Self-hosting
**Created:** [August 4, 2026, 6:09pm UTC](https://meta.discourse.org/t/backup-upload-failure-due-to-uninitialized-transfermanager/409303 "2026-08-04T18:09:06Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![exodrifter](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/exodrifter/32/506103_2.png) [@exodrifter](https://meta.discourse.org/u/exodrifter)
#### Post date: [August 4, 2026, 6:09pm UTC](https://meta.discourse.org/t/backup-upload-failure-due-to-uninitialized-transfermanager/409303/1 "2026-08-04T18:09:07Z")

</div>

After updating to [v2026.8.0-latest.1 +4](https://github.com/discourse/discourse/commit/7f9005681164a9247a96a4a009c17e3902696177), my backups have started failing. These are the logs: [log.txt.zip](https://meta.discourse.org/uploads/short-url/vnqFEpOqapTQiGgzgw1dd1gwEjJ.zip) (22.1 KB)

In particular, here’s the section that looks relevant:

```plaintext
[2026-08-04 03:37:52] Uploading archive...
[2026-08-04 03:37:52] EXCEPTION: uninitialized constant Aws::S3::TransferManager
[2026-08-04 03:37:52] /var/www/discourse/lib/s3_helper.rb:453:in 'S3Helper#transfer_manager'
/var/www/discourse/lib/s3_helper.rb:332:in 'S3Helper#upload_file'
/var/www/discourse/lib/backup_restore/s3_backup_store.rb:48:in 'BackupRestore::S3BackupStore#upload_file'
/var/www/discourse/lib/backup_restore/creator.rb:437:in 'BackupRestore::Creator#upload_archive'
/var/www/discourse/lib/backup_restore/creator.rb:41:in 'BackupRestore::Creator#run'
/var/www/discourse/lib/backup_restore.rb:13:in 'BackupRestore.backup!'
/var/www/discourse/app/jobs/regular/create_backup.rb:10:in 'Jobs::CreateBackup#execute'
/var/www/discourse/app/jobs/base.rb:313:in 'block (2 levels) in Jobs::Base#perform'

```

I’m not sure how to solve this issue.

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