Class "OC\Preview\Storage\Root" not found when performing Prevew Generator generate-all

[adelacerda]

How to use GitHub

• Please use the 👍 reaction to show that you are affected by the same issue.
• Please don't comment if you have no relevant information to add. It's just extra noise for everyone subscribed to this issue.
• Subscribe to receive notifications on status change and new comments.

---

Steps to reproduce

1. docker exec -u www-data nextcloud php occ preview:generate-all -v
2. Wait until the error gets logged into nextcloud.log

Expected behaviour

No error should be logged. If OC\Preview\Storage\Root is no longer exposed by Nextcloud, Preview Generator should not try to call it.

Actual behaviour

Class "OC\Preview\Storage\Root" not found is being logged multiple times when running generate-all

Server configuration

Web server: Apache

Database: PostgreSQL

PHP version: 8.4.18

Nextcloud version: Nextcloud Hub 26 Winter (33.0.0)

List of activated apps

Enabled:
  - activity: 6.0.0-dev.0
  - bruteforcesettings: 6.0.0-dev.0
  - circles: 33.0.0
  - cloud_federation_api: 1.17.0
  - comments: 1.23.0
  - contactsinteraction: 1.14.1
  - cospend: 4.0.0
  - dashboard: 7.13.0
  - dav: 1.36.0
  - federatedfilesharing: 1.23.0
  - federation: 1.23.0
  - files: 2.5.0
  - files_downloadlimit: 5.1.0-dev.0
  - files_pdfviewer: 6.0.0-dev.0
  - files_reminders: 1.6.0
  - files_sharing: 1.25.2
  - files_trashbin: 1.23.0
  - files_versions: 1.26.0
  - firstrunwizard: 6.0.0-dev.0
  - guests: 4.6.0
  - logreader: 6.0.0
  - lookup_server_connector: 1.21.0
  - memories: 7.8.2
  - nextcloud_announcements: 5.0.0
  - notifications: 6.0.0
  - oauth2: 1.21.0
  - password_policy: 5.0.0-dev.0
  - previewgenerator: 5.13.0
  - privacy: 5.0.0-dev.0
  - profile: 1.2.0
  - provisioning_api: 1.23.0
  - recognize: 11.0.1
  - recommendations: 6.0.0-dev.0
  - related_resources: 4.0.0-dev.0
  - serverinfo: 5.0.0-dev.0
  - settings: 1.16.0
  - sharebymail: 1.23.0
  - support: 5.0.0
  - survey_client: 5.0.0-dev.0
  - systemtags: 1.23.0
  - text: 7.0.0-dev.3
  - theming: 2.8.0
  - twofactor_backupcodes: 1.22.0
  - twofactor_totp: 15.0.0-dev.0
  - twofactor_webauthn: 2.6.0
  - updatenotification: 1.23.0
  - user_status: 1.13.0
  - viewer: 6.0.0-dev.0
  - weather_status: 1.13.0
  - webhook_listeners: 1.5.0
  - workflowengine: 2.15.0
Disabled:
  - admin_audit: 1.23.0
  - app_api: 33.0.0 (installed 33.0.0)
  - encryption: 2.21.0
  - files_external: 1.25.1
  - photos: 6.0.0-dev.0 (installed 6.0.0-dev.0)
  - suspicious_login: 11.0.0-dev.0
  - twofactor_nextcloud_notification: 7.0.0
  - user_ldap: 1.24.0```
</details>

<details>
<summary>Nextcloud configuration</summary>

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your Nextcloud installation folder

</details>

### Browser

**Browser name:** Chrome

**Browser version:** 1145.0.7632.160

**Operating system:** Mac

<details>
<summary>Browser log</summary>

Not applicable

</details>