Sharing doesn't work after upgrading to 12.0

[wojciechszela]

Since upgrading to 12.0 sharing feature is not visible for user. OCC shows the app as disabled. Re-enabling files_sharing and files_external apps fails with the following error

[Exception]
App "" cannot be installed because appinfo file cannot be read.

Steps to reproduce

1. upgrade from 11 to 12.0
2. login as regular user and try to share any folder - notice you can not share anything, no such feature
3. on server run sudo -u www-data php occ app:list
4. notice that files_sharing and files_external are disabled even though in previous version were enabled
5. on server run sudo -u www-data php occ app:enable files_external
6. above command fails to enable the app with error: App "" cannot be installed because appinfo file cannot be read.

Expected behaviour

Files sharing apps should work after upgrade from version 11 to 12. Enabling/disabling files_sharing and files_external should result in enabling/disabling them.

Actual behaviour

Tell us what happens instead

Server configuration

Operating system: Ubuntu 16.10

Web server: Nginx 1.13

Database: postgresql 9.5

PHP version: php 7.0.18

Nextcloud version: 12.0.0

Updated from an older Nextcloud/ownCloud or fresh install: update from 11.0.3

Where did you install Nextcloud from:

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

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

Nextcloud configuration:

Config report

Enabled:

• activity: 2.5.2
• admin_audit: 1.2.0
• bruteforcesettings: 1.0.2
• calendar: 1.5.3
• comments: 1.2.0
• contacts: 1.5.3
• dav: 1.3.0
• encryption: 1.6.0
• federatedfilesharing: 1.2.0
• federation: 1.2.0
• files: 1.7.2
• files_pdfviewer: 1.1.1
• files_texteditor: 2.4.1
• files_trashbin: 1.2.0
• files_videoplayer: 1.1.0
• firstrunwizard: 2.1
• gallery: 17.0.0
• logreader: 2.0.0
• lookup_server_connector: 1.0.0
• nextcloud_announcements: 1.1
• notifications: 2.0.0
• oauth2: 1.0.5
• password_policy: 1.2.2
• provisioning_api: 1.2.0
• serverinfo: 1.2.0
• sharebymail: 1.2.0
• socialsharing_diaspora: 1.0.1
• socialsharing_email: 1.0.1
• socialsharing_facebook: 1.0.1
• socialsharing_googleplus: 1.0.1
• socialsharing_twitter: 1.0.1
• spreed: 2.0.1
• survey_client: 1.0.0
• systemtags: 1.2.0
• theming: 1.3.0
• twofactor_backupcodes: 1.1.1
• updatenotification: 1.2.0
• workflowengine: 1.2.0
  Disabled:
• files_external
• files_sharing
• files_versions
• user_external
• user_ldap

Are you using external storage, if yes which one: local

Are you using encryption: yes

Are you using an external user-backend, if yes which one: no

LDAP configuration (delete this part if not used)

LDAP config

Client configuration

Browser: any

Operating system: any

Logs

Web server error log

Web server error log

n/a

Nextcloud log (data/nextcloud.log)

Nextcloud log

{"reqId":"UMbD98gQEP0GODYBvh7g","level":3,"time":"2017-06-04T22:04:48+00:00","remoteAddr":"172.113.248.211","user":"wojciech","app":"no app in context","method":"PROPFIND","url":"/remote.php/webdav/","message":"Exception: {"Exception":"Error","Message":"Class 'OCA\\Files_Sharing\\Helper' not found","Code":0,"Trace":"#0 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(209): require_once()\n#1 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(149): OC_App::requireAppFile('files_sharing')\n#2 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(124): OC_App::loadApp('files_sharing')\n#3 \/var\/www\/owncloud\/lib\/private\/legacy\/util.php(185): OC_App::loadApps(Array)\n#4 \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php(352): OC_Util::setupFS()\n#5 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(1123): OC\\Files\\Filesystem::resolvePath('\/files_encrypti...')\n#6 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(532): OC\\Files\\View->basicOperation('file_exists', '\/files_encrypti...')\n#7 \/var\/www\/owncloud\/lib\/private\/Encryption\/Keys\/Storage.php(209): OC\\Files\\View->file_exists('\/files_encrypti...')\n#8 \/var\/www\/owncloud\/lib\/private\/Encryption\/Keys\/Storage.php(107): OC\\Encryption\\Keys\\Storage->getKey('\/files_encrypti...')\n#9 \/var\/www\/owncloud\/apps\/encryption\/lib\/KeyManager.php(569): OC\\Encryption\\Keys\\Storage->getSystemUserKey('pubShare_b32374...', 'OC_DEFAULT_MODU...')\n#10 \/var\/www\/owncloud\/apps\/encryption\/lib\/KeyManager.php(157): OCA\\Encryption\\KeyManager->getPublicShareKey()\n#11 \/var\/www\/owncloud\/apps\/encryption\/lib\/Users\/Setup.php(86): OCA\\Encryption\\KeyManager->validateShareKey()\n#12 \/var\/www\/owncloud\/apps\/encryption\/lib\/AppInfo\/Application.php(73): OCA\\Encryption\\Users\\Setup->setupSystem()\n#13 \/var\/www\/owncloud\/apps\/encryption\/appinfo\/app.php(30): OCA\\Encryption\\AppInfo\\Application->__construct(Array, true)\n#14 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(209): require_once('\/var\/www\/ownclo...')\n#15 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(149): OC_App::requireAppFile('encryption')\n#16 \/var\/www\/owncloud\/lib\/private\/legacy\/app.php(124): OC_App::loadApp('encryption')\n#17 \/var\/www\/owncloud\/remote.php(147): OC_App::loadApps(Array)\n#18 {main}","File":"\/var\/www\/owncloud\/apps\/files_sharing\/appinfo\/app.php","Line":29}","userAgent":"Mozilla/5.0 (Windows) mirall/2.1.0","version":"12.0.0.29"}

Browser log

Browser log

n/a

[schiessle]

please check if following file exists and if the webserver has read permissions: apps/files_sharing/appinfo/info.xml

Also it would be good to know how you performed the update?

[wojciechszela]

The file does exist and is readable by the proper user. The contents seem to be right.

I did upgrade manually, following these instructions https://docs.nextcloud.com/server/12/admin_manual/maintenance/manual_upgrade.html

Let me know please if I can provide any other helpful info.

[tlueder]

Hi There,

had the same problem.
I updated the cloud from 11.0.3 to 12.0.1 manually like I always do.
My fix was to delete all lines in the part of the info.xml

Had the same problem after upgrading the calender plugin and fixed it the same way.

To me it seems to like charset problem

[xydac]

Any update on this, It's still not working and giving error
App "" cannot be installed because appinfo file cannot be read.

Files is there and readable with same permission as other apps.

I further downloaded it from git and replace the folder but it's still giving same error on enabling.

EDIT : Also, I don't have LDAP enabled.

[avilkin]

Hm. I have the same problem after upgrading from 11 to 12.
I removed second and third strings from "description" node in info.xml file, and, after which "file-sharing" was enabled without any errors. After that I had trying delete only "line breaks" in "description" and got error again. And finally, I reduced the number of characters (just deleting last sentence "More information...") and error gone.
Its strange, but seems like "description" must have <700 chars. Maybe some libXML limitations (use 2.9.3 version)?
And one more: now I have "failed the integrity check": "files_sharing - INVALID_HASH - appinfo/info.xml", but nextcloud still working.

[MorrisJobke]

As there is no feedback since a while I will close this ticket. If this is still happening please feel free to reopen.