Cannot "repair" my installation in maintenance mode

Please help us by providing the following info. Before posting please also check the pinned "Known issues" thread and make sure that you're running the latest available version for oC 9.1:

Steps to reproduce
1. sudo -u www-data php occ maintenance:repair

Expected behaviour
Should have "repaired" any errors found?

Actual behaviour
Throws an error message

sudo -u www-data php occ maintenance:repair
ownCloud is in maintenance mode - no app have been loaded
Failed to load repair step for dav: Repair step 'OCA\DAV\Migration\Classification' is unknown
 - Repair mime types
 - Repair legacy storages
 - Clear asset cache after upgrade
     - Asset pipeline disabled -> nothing to do
 - Generate ETags for file where no ETag is present.
     - ETags have been fixed for 0 files/folders.
 - Clean tags and favorites
     - 0 tags of deleted users have been removed.
     - 0 tags for delete files have been removed.
     - 0 tag entries for deleted tags have been removed.
     - 0 tags with no entries have been removed.
 - Drop old database tables
 28/28 [============================] 100%
 - Drop old background jobs
 - Remove getetag entries in properties table
     - Removed 0 unneeded "{DAV:}getetag" entries from properties table.
 - Repair outdated OCS IDs
 - Repair invalid shares
 - Remove old share propagation app entries
 - Remove old (< 9.0) calendar/contact shares
 4/4 [============================] 100%  
 - Fix permissions so avatars can be stored again
 2/2 [============================] 100%  
 - Remove shares of a users root folder

Server configuration
Operating system: Debian Linux 8
Web server: Apache version 2.4.10
Database: MySQL version 5.5.50
PHP version: 5.6.24-0+deb8u1
ownCloud version (see ownCloud admin page):
Updated from an older ownCloud or fresh install: updated through apt-get
ownCloud log (data/owncloud.log, see

Special configuration (external storage, external authentication, reverse proxy, server-side-encryption): none

Integrity status for oC9+

No errors have been found.


please report this directly to the bugtracker:

Am I better off not re-installing?

I'm trying to use this install in a professional office...

I don't think that a reinstall will solve this. That repair step can't load a specific class however according to your posted integrity status:

No errors have been found.

you have no broken / missing files. So this looks to me like a bug in 9.1.0 itself which won't be solved by reinstalling.

I'll close this as I've now opened issue on own cloud/core

Thanks for reporting that there. Here is the reference:

Seems a fix is now found:

yup - don't try this with maintenance mode --on....