Unable to load the shares list - ShareAPIController::getDisplayNameFromAddressBook() must be of the type string, null returned

[tkolo]

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Steps to reproduce

1. Share file to external cloud user
2. Try to change share settings on said file

I've only tried once so the expected steps might not be exact

Expected behaviour

Shares should open

Actual behaviour

There's an exception thrown in nextcloud

Server configuration

Operating system: Ubuntu 18.04

Web server: Nginx 1.17.8

Database: PostgreSQL 12.2 (Ubuntu 12.2-2.pgdg18.04+1)

PHP version: PHP 7.4.4 (fpm-fcgi)

Nextcloud version: (see Nextcloud admin page) 19.0.0, also tried on 18.0.6

Updated from an older Nextcloud/ownCloud or fresh install: updated from 18.0.6 to 19.0.0, both show exact same behavior

Where did you install Nextcloud from: downloaded tarball from official nextcloud site

Signing status:

Signing status

Login as admin user into your Nextcloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results here.

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

Enabled:
  - accessibility: 1.5.0
  - activity: 2.12.0
  - admin_audit: 1.9.0
  - admin_notifications: 1.0.2
  - calendar: 2.0.3
  - cloud_federation_api: 1.2.0
  - comments: 1.9.0
  - contacts: 3.3.0
  - contactsinteraction: 1.0.0
  - dav: 1.15.0
  - federatedfilesharing: 1.9.0
  - federation: 1.9.0
  - files: 1.14.0
  - files_pdfviewer: 1.8.0
  - files_retention: 1.8.0
  - files_rightclick: 0.16.0
  - files_sharing: 1.11.0
  - files_trashbin: 1.9.0
  - files_versions: 1.12.0
  - files_videoplayer: 1.8.0
  - firstrunwizard: 2.8.0
  - logreader: 2.4.0
  - lookup_server_connector: 1.7.0
  - nextcloud_announcements: 1.8.0
  - notifications: 2.7.0
  - oauth2: 1.7.0
  - password_policy: 1.9.1
  - photos: 1.1.0
  - privacy: 1.3.0
  - provisioning_api: 1.9.0
  - recommendations: 0.7.0
  - serverinfo: 1.9.0
  - settings: 1.1.0
  - sharebymail: 1.9.0
  - support: 1.2.1
  - survey_client: 1.7.0
  - systemtags: 1.9.0
  - text: 3.0.1
  - theming: 1.10.0
  - twofactor_backupcodes: 1.8.0
  - twofactor_totp: 4.1.3
  - twofactor_u2f: 5.1.0
  - updatenotification: 1.9.0
  - viewer: 1.3.0
  - workflowengine: 2.1.0
Disabled:
  - encryption
  - files_external
  - socialsharing_email
  - user_ldap

Nextcloud configuration:

Config report

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

or 

Insert your config.php content here. 
Make sure to remove all sensitive content such as passwords. (e.g. database password, passwordsalt, secret, smtp password, …)

{
    "system": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "*snip*"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "overwrite.cli.url": "*snip*",
        "dbtype": "pgsql",
        "version": "19.0.0.12",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "logtimezone": "UTC",
        "installed": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "theme": "",
        "loglevel": 2,
        "updater.release.channel": "stable",
        "mail_smtpsecure": "ssl",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "465",
        "app_install_overwrite": [
            "admin_notifications",
            "twofactor_rcdevsopenotp"
        ],
        "updater.secret": "***REMOVED SENSITIVE VALUE***"
    },
    "apps": {
        "accessibility": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.5.0"
        },
        "activity": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "2.12.0"
        },
        "admin_audit": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "admin_notifications": {
            "published-deprecation-notification": "yes",
            "installed_version": "1.0.2",
            "types": "logging",
            "enabled": "yes"
        },
        "backgroundjob": {
            "lastjob": "347"
        },
        "bookmarks": {
            "types": "",
            "enabled": "no",
            "installed_version": "0.17.0"
        },
        "bruteforcesettings": {
            "types": "",
            "enabled": "no",
            "installed_version": "1.3.0"
        },
        "calendar": {
            "types": "",
            "enabled": "yes",
            "installed_version": "2.0.3"
        },
        "cloud_federation_api": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "1.2.0"
        },
        "comments": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "contacts": {
            "types": "",
            "enabled": "yes",
            "installed_version": "3.3.0"
        },
        "contactsinteraction": {
            "installed_version": "1.0.0",
            "types": "dav",
            "enabled": "yes"
        },
        "core": {
            "installedat": "1489611833.3481",
            "vendor": "nextcloud",
            "public_webdav": "dav\/appinfo\/v1\/publicwebdav.php",
            "public_files": "files_sharing\/public.php",
            "backgroundjobs_mode": "cron",
            "shareapi_default_expire_date": "yes",
            "repairlegacystoragesdone": "yes",
            "moveavatarsdone": "yes",
            "previewsCleanedUp": "1",
            "default_encryption_module": "OC_DEFAULT_MODULE",
            "installed.bundles": "[\"CoreBundle\"]",
            "enterpriseLogoChecked": "yes",
            "scss.variables": "fd2f71d60092c27ca93f3deb9ce568cd",
            "theming.variables": "35d886836a77b200ed99db01068506d3",
            "lastupdatedat": "1593598430",
            "updater.secret.created": "1593598257",
            "lastupdateResult": "[]",
            "lastcron": "1593599080",
            "oc.integritycheck.checker": "[]"
        },
        "dav": {
            "types": "filesystem",
            "enabled": "yes",
            "buildCalendarSearchIndex": "yes",
            "installed_version": "1.15.0",
            "buildCalendarReminderIndex": "yes",
            "regeneratedBirthdayCalendarsForYearFix": "yes",
            "chunks_migrated": "1"
        },
        "encryption": {
            "installed_version": "2.0.0",
            "types": "filesystem",
            "recoveryKeyId": "recoveryKey_c385678c",
            "publicShareKeyId": "pubShare_c385678c",
            "masterKeyId": "master_c385678c",
            "enabled": "no"
        },
        "federatedfilesharing": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "federation": {
            "types": "authentication",
            "enabled": "yes",
            "autoAddServers": "0",
            "installed_version": "1.9.0"
        },
        "files": {
            "types": "filesystem",
            "enabled": "yes",
            "cronjob_scan_files": "500",
            "installed_version": "1.14.0"
        },
        "files_pdfviewer": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.8.0"
        },
        "files_retention": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "1.8.0"
        },
        "files_rightclick": {
            "types": "",
            "enabled": "yes",
            "installed_version": "0.16.0"
        },
        "files_sharing": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "1.11.0"
        },
        "files_texteditor": {
            "types": "",
            "installed_version": "2.8.0",
            "enabled": "no"
        },
        "files_trashbin": {
            "enabled": "yes",
            "types": "filesystem,dav",
            "installed_version": "1.9.0"
        },
        "files_versions": {
            "enabled": "yes",
            "types": "filesystem,dav",
            "installed_version": "1.12.0"
        },
        "files_videoplayer": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.8.0"
        },
        "firstrunwizard": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "2.8.0"
        },
        "gallery": {
            "types": "",
            "installed_version": "18.4.0",
            "enabled": "no"
        },
        "logreader": {
            "types": "",
            "enabled": "yes",
            "installed_version": "2.4.0"
        },
        "lookup_server_connector": {
            "types": "authentication",
            "enabled": "yes",
            "installed_version": "1.7.0"
        },
        "mail": {
            "types": "",
            "enabled": "no",
            "installed_version": "0.11.1"
        },
        "nextcloud_announcements": {
            "types": "logging",
            "enabled": "yes",
            "pub_date": "Thu, 24 Oct 2019 00:00:00 +0200",
            "installed_version": "1.8.0"
        },
        "notes": {
            "types": "",
            "installed_version": "2.6.0",
            "enabled": "no"
        },
        "notifications": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "2.7.0"
        },
        "oauth2": {
            "types": "authentication",
            "enabled": "yes",
            "installed_version": "1.7.0"
        },
        "password_policy": {
            "enabled": "yes",
            "types": "authentication",
            "installed_version": "1.9.1"
        },
        "photos": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.1.0"
        },
        "privacy": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.3.0"
        },
        "provisioning_api": {
            "types": "prevent_group_restriction",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "rainloop": {
            "installed_version": "4.27.0",
            "enabled": "no",
            "types": ""
        },
        "recommendations": {
            "types": "",
            "enabled": "yes",
            "installed_version": "0.7.0"
        },
        "serverinfo": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "settings": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.1.0"
        },
        "sharebymail": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "socialsharing_email": {
            "installed_version": "2.0.0",
            "types": "",
            "enabled": "no"
        },
        "spreed": {
            "types": "prevent_group_restriction",
            "enabled": "no",
            "stun_servers": "***REMOVED SENSITIVE VALUE***",
            "installed_version": "5.0.3"
        },
        "support": {
            "enabled": "yes",
            "types": "session",
            "installed_version": "1.2.1",
            "SwitchUpdaterServerHasRun": "yes"
        },
        "survey_client": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.7.0",
            "last_sent": "1591357529",
            "last_report": "{\"id\":\"ocvqa11qsad5\",\"items\":[[\"server\",\"version\",\"18.0.5.1\"],[\"server\",\"code\",\"other\"],[\"server\",\"enable_avatars\",\"yes\"],[\"server\",\"enable_previews\",\"yes\"],[\"server\",\"memcache.local\",\"\\\\OC\\\\Memcache\\\\APCu\"],[\"server\",\"memcache.distributed\",\"none\"],[\"server\",\"asset-pipeline.enabled\",\"no\"],[\"server\",\"filelocking.enabled\",\"yes\"],[\"server\",\"memcache.locking\",\"none\"],[\"server\",\"debug\",\"no\"],[\"server\",\"cron\",\"cron\"],[\"php\",\"version\",\"7.4.4\"],[\"php\",\"memory_limit\",-1],[\"php\",\"max_execution_time\",0],[\"php\",\"upload_max_filesize\",2097152],[\"database\",\"type\",\"pgsql\"],[\"database\",\"version\",\"PostgreSQL 12.2 (Ubuntu 12.2-2.pgdg18.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0, 64-bit\"],[\"database\",\"size\",16794479],[\"apps\",\"rainloop\",\"disabled\"],[\"apps\",\"bookmarks\",\"disabled\"],[\"apps\",\"files_texteditor\",\"disabled\"],[\"apps\",\"workflowengine\",\"2.0.0\"],[\"apps\",\"spreed\",\"disabled\"],[\"apps\",\"logreader\",\"2.3.0\"],[\"apps\",\"tasks\",\"disabled\"],[\"apps\",\"sharebymail\",\"1.8.0\"],[\"apps\",\"notes\",\"disabled\"],[\"apps\",\"mail\",\"disabled\"],[\"apps\",\"gallery\",\"disabled\"],[\"apps\",\"password_policy\",\"1.8.0\"],[\"apps\",\"provisioning_api\",\"1.8.0\"],[\"apps\",\"survey_client\",\"1.6.0\"],[\"apps\",\"twofactor_backupcodes\",\"1.7.0\"],[\"apps\",\"federation\",\"1.8.0\"],[\"apps\",\"lookup_server_connector\",\"1.6.0\"],[\"apps\",\"files\",\"1.13.1\"],[\"apps\",\"activity\",\"2.11.0\"],[\"apps\",\"dav\",\"1.14.0\"],[\"apps\",\"files_sharing\",\"1.10.1\"],[\"apps\",\"files_trashbin\",\"1.8.0\"],[\"apps\",\"files_versions\",\"1.11.0\"],[\"apps\",\"comments\",\"1.8.0\"],[\"apps\",\"firstrunwizard\",\"2.7.0\"],[\"apps\",\"nextcloud_announcements\",\"1.7.0\"],[\"apps\",\"notifications\",\"2.6.0\"],[\"apps\",\"systemtags\",\"1.8.0\"],[\"apps\",\"theming\",\"1.9.0\"],[\"apps\",\"serverinfo\",\"1.8.0\"],[\"apps\",\"files_videoplayer\",\"1.7.0\"],[\"apps\",\"federatedfilesharing\",\"1.8.0\"],[\"apps\",\"encryption\",\"disabled\"],[\"apps\",\"cloud_federation_api\",\"1.1.0\"],[\"apps\",\"admin_audit\",\"1.8.0\"],[\"apps\",\"bruteforcesettings\",\"disabled\"],[\"apps\",\"twofactor_nextcloud_notification\",\"disabled\"],[\"apps\",\"files_retention\",\"1.7.0\"],[\"apps\",\"socialsharing_email\",\"2.0.0\"],[\"apps\",\"unsplash\",\"disabled\"],[\"apps\",\"twofactor_totp\",\"4.1.3\"],[\"apps\",\"accessibility\",\"1.4.0\"],[\"apps\",\"twofactor_u2f\",\"5.1.0\"],[\"apps\",\"text\",\"2.0.0\"],[\"apps\",\"updatenotification\",\"1.8.0\"],[\"apps\",\"oauth2\",\"1.6.0\"],[\"apps\",\"files_pdfviewer\",\"1.7.0\"],[\"apps\",\"admin_notifications\",\"1.0.2\"],[\"apps\",\"files_rightclick\",\"0.15.2\"],[\"apps\",\"privacy\",\"1.2.0\"],[\"apps\",\"recommendations\",\"0.6.0\"],[\"apps\",\"viewer\",\"1.2.0\"],[\"apps\",\"photos\",\"1.0.0\"],[\"apps\",\"settings\",\"1.0.0\"],[\"apps\",\"support\",\"1.1.1\"],[\"apps\",\"calendar\",\"2.0.3\"],[\"apps\",\"contacts\",\"3.3.0\"],[\"stats\",\"num_files\",808],[\"stats\",\"num_users\",1],[\"stats\",\"num_storages\",4],[\"stats\",\"num_storages_local\",1],[\"stats\",\"num_storages_home\",1],[\"stats\",\"num_storages_other\",2],[\"stats\",\"num_comments\",0],[\"stats\",\"num_comment_markers\",0],[\"stats\",\"num_systemtags\",0],[\"stats\",\"num_systemtags_mappings\",0],[\"files_sharing\",\"num_shares\",1],[\"files_sharing\",\"num_shares_user\",0],[\"files_sharing\",\"num_shares_groups\",0],[\"files_sharing\",\"num_shares_link\",1],[\"files_sharing\",\"num_shares_link_no_password\",1],[\"files_sharing\",\"num_fed_shares_sent\",0],[\"files_sharing\",\"num_fed_shares_received\",0],[\"files_sharing\",\"permissions_3_1\",1],[\"encryption\",\"enabled\",\"no\"],[\"encryption\",\"default_module\",\"yes\"]]}"
        },
        "systemtags": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "1.9.0"
        },
        "tasks": {
            "types": "",
            "installed_version": "0.9.8",
            "enabled": "no"
        },
        "text": {
            "enabled": "yes",
            "types": "dav",
            "installed_version": "3.0.1"
        },
        "theming": {
            "types": "logging",
            "enabled": "yes",
            "installed_version": "1.10.0",
            "cachebuster": "9"
        },
        "twofactor_backupcodes": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.8.0"
        },
        "twofactor_nextcloud_notification": {
            "types": "",
            "enabled": "no",
            "installed_version": "1.1.1",
            "tkolosowski_enabled": "1"
        },
        "twofactor_totp": {
            "types": "",
            "enabled": "yes",
            "installed_version": "4.1.3"
        },
        "twofactor_u2f": {
            "types": "",
            "enabled": "yes",
            "installed_version": "5.1.0"
        },
        "unsplash": {
            "installed_version": "1.1.1",
            "types": "authentication",
            "enabled": "no"
        },
        "updatenotification": {
            "types": "",
            "enabled": "yes",
            "spreed": "2.0.2",
            "bookmarks": "0.12.2",
            "unsplash": "1.1.1",
            "theming": "1.4.5",
            "notes": "2.6.0",
            "twofactor_totp": "4.1.3",
            "tasks": "0.9.8",
            "files_pdfviewer": "1.2.1",
            "mail": "0.11.1",
            "bruteforcesettings": "1.3.0",
            "twofactor_u2f": "5.1.0",
            "twofactor_nextcloud_notification": "1.1.1",
            "update_check_errors": "0",
            "installed_version": "1.9.0",
            "files_retention": "1.7.1",
            "core": "18.0.6.0",
            "calendar": "2.0.3",
            "contacts": "3.3.0"
        },
        "viewer": {
            "types": "",
            "enabled": "yes",
            "installed_version": "1.3.0"
        },
        "workflowengine": {
            "types": "filesystem",
            "enabled": "yes",
            "installed_version": "2.1.0"
        }
    }
}

Are you using external storage, if yes which one: local/smb/sftp/...
none

Are you using encryption: yes/no
no, neither e2e nor full disk encryption provided by nextcloud

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...
none

Client configuration

Browser:
Mozilla/5.0 (X11; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0

Operating system:
Arch Linux

Logs

Web server error log

Web server error log

*IP Snip* - - [01/Jul/2020:12:12:31 +0200] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=*snip*.pdf&reshares=true HTTP/2.0" 404 194 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0"
*IP Snip* - - [01/Jul/2020:12:12:31 +0200] "PROPFIND /remote.php/dav/systemtags-relations/files/8152 HTTP/2.0" 207 427 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0"
*IP Snip* - - [01/Jul/2020:12:12:31 +0200] "REPORT /remote.php/dav/comments/files/8152/ HTTP/2.0" 207 156 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0"
*IP Snip* - - [01/Jul/2020:12:12:31 +0200] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=*snip*.pdf&shared_with_me=true HTTP/2.0" 200 74 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0"

Nextcloud log (data/nextcloud.log)

Nextcloud log

{
  "reqId": "IfrxxejW4svzrq3XrOrp",
  "level": 3,
  "time": "2020-07-01T10:12:31+00:00",
  "remoteAddr": "37.120.211.164",
  "user": "*snip*",
  "app": "no app in context",
  "method": "GET",
  "url": "/ocs/v2.php/apps/files_sharing/api/v1/shares?format\u003djson\u0026path\u003d*snip*.pdf\u0026reshares\u003dtrue",
  "message": {
    "Exception": "Exception",
    "Message": "Return value of OCA\\Files_Sharing\\Controller\\ShareAPIController::getDisplayNameFromAddressBook() must be of the type string, null returned",
    "Code": 0,
    "Trace": [
      {
        "file": "/var/www/*snip*/htdocs/lib/private/AppFramework/App.php",
        "line": 137,
        "function": "dispatch",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "-\u003e"
      },
      {
        "file": "/var/www/*snip*/htdocs/lib/private/AppFramework/Routing/RouteActionHandler.php",
        "line": 47,
        "function": "main",
        "class": "OC\\AppFramework\\App",
        "type": "::"
      },
      {
        "function": "__invoke",
        "class": "OC\\AppFramework\\Routing\\RouteActionHandler",
        "type": "-\u003e"
      },
      {
        "file": "/var/www/*snip*/htdocs/lib/private/Route/Router.php",
        "line": 297,
        "function": "call_user_func"
      },
      {
        "file": "/var/www/*snip*/htdocs/ocs/v1.php",
        "line": 82,
        "function": "match",
        "class": "OC\\Route\\Router",
        "type": "-\u003e"
      },
      {
        "file": "/var/www/*snip*/htdocs/ocs/v2.php",
        "line": 24,
        "args": [
          "/var/www/*snip*/htdocs/ocs/v1.php"
        ],
        "function": "require_once"
      }
    ],
    "File": "/var/www/*snip*/htdocs/lib/private/AppFramework/Http/Dispatcher.php",
    "Line": 110,
    "Previous": {
      "Exception": "TypeError",
      "Message": "Return value of OCA\\Files_Sharing\\Controller\\ShareAPIController::getDisplayNameFromAddressBook() must be of the type string, null returned",
      "Code": 0,
      "Trace": [
        {
          "file": "/var/www/*snip*/htdocs/apps/files_sharing/lib/Controller/ShareAPIController.php",
          "line": 242,
          "function": "getDisplayNameFromAddressBook",
          "class": "OCA\\Files_Sharing\\Controller\\ShareAPIController",
          "type": "-\u003e"
        },
        {
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    set https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:7
    r https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    c https://*snip*/apps/files_sharing/js/dist/files_sharing_tab.js?v=75cb3a17-9:590
    _invoke https://*snip*/apps/files_sharing/js/dist/files_sharing_tab.js?v=75cb3a17-9:590
    t https://*snip*/apps/files_sharing/js/dist/files_sharing_tab.js?v=75cb3a17-9:590
    E https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    a https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    (Async: promise callback)
    E https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    a https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    _ https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    _ https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    open https://*snip*/apps/files/js/dist/sidebar.js?v=75cb3a17-9:212
    _updateDetailsView https://*snip*/js/files/merged-index.js?v=75cb3a17-9:4540
    showDetailsView https://*snip*/js/files/merged-index.js?v=75cb3a17-9:4498
    actionHandler https://*snip*/apps/files_sharing/js/dist/additionalScripts.js?v=75cb3a17-9:1
    action https://*snip*/js/files/merged-index.js?v=75cb3a17-9:2894
    _renderInlineAction https://*snip*/js/files/merged-index.js?v=75cb3a17-9:3197
    dispatch https://*snip*/core/js/dist/main.js?v=75cb3a17-9:25
    handle https://*snip*/core/js/dist/main.js?v=75cb3a17-9:25
    (Async: EventListener.handleEvent)
    add https://*snip*/core/js/dist/main.js?v=75cb3a17-9:25
    add https://*snip*/core/js/dist/main.js?v=75cb3a17-9:565
    on https://*snip*/core/js/dist/main.js?v=75cb3a17-9:25
    each https://*snip*/core/js/dist/main.js?v=75cb3a17-9:14

[SowaNMS]

{"reqId":"XxbCYpnUypdTLz2lHHTkLwAATA0","level":3,"time":"2020-07-21T10:24:34+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"PROPFIND","url":"/remote.php/dav/systemtags-relations/files/1666","message":" Backends provided no user object for lwlvl","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0","version":"18.0.7.1"}
{"reqId":"XxbCYpnUypdTLz2lHHTkMAAATBA","level":3,"time":"2020-07-21T10:24:35+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"PROPFIND","url":"/remote.php/dav/systemtags-relations/files/1666","message":" Backends provided no user object for lwlvl","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0","version":"18.0.7.1"}
{"reqId":"XxbCYpnUypdTLz2lHHTkMQAATAs","level":3,"time":"2020-07-21T10:24:35+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"REPORT","url":"/remote.php/dav/comments/files/1666/","message":" Backends provided no user object for lwlvl","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0","version":"18.0.7.1"}
{"reqId":"XxbCYpnUypdTLz2lHHTkNAAATAA","level":3,"time":"2020-07-21T10:24:35+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"GET","url":"/ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=%2FBusiness%2FCustomer%2FCommit%2FSoftware%2FAppStudio8203&shared_with_me=true","message":" Backends provided no user object for lwlvl","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0","version":"18.0.7.1"}
{"reqId":"XxbCYpnUypdTLz2lHHTkNAAATAA","level":3,"time":"2020-07-21T10:24:35+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"no app in context","method":"GET","url":"/ocs/v2.php/apps/files_sharing/api/v1/shares?format=json&path=%2FBusiness%2FCustomer%2FCommit%2FSoftware%2FAppStudio8203&shared_with_me=true","message":{"Exception":"OCA\Circles\Exceptions\CircleDoesNotExistException","Message":"Circle not found 51e0eaa01219e","Code":0,"Trace":[{"file":"/s/www/nextcloud/apps/circles/lib/Service/MembersService.php","line":456,"function":"getCircle","class":"OCA\Circles\Db\CirclesRequest","type":"->","args":["51e0eaa01219e","jsi"]},{"file":"/s/www/nextcloud/apps/circles/lib/Api/v1/Circles.php","line":331,"function":"getMember","class":"OCA\Circles\Service\MembersService","type":"->","args":["51e0eaa01219e","jsi",1,false]},{"file":"/s/www/nextcloud/apps/files_sharing/lib/Controller/ShareAPIController.php","line":1610,"function":"getMember","class":"OCA\Circles\Api\v1\Circles","type":"::","args":["51e0eaa01219e","jsi",1]},{"file":"/s/www/nextcloud/apps/files_sharing/lib/Controller/ShareAPIController.php","line":1225,"function":"shareProviderResharingRights","class":"OCA\Files_Sharing\Controller\ShareAPIController","type":"->","args":["jsi",{"class":"OC\Share20\Share"},{"class":"OC\Files\Node\Folder"}]},{"file":"/s/www/nextcloud/apps/files_sharing/lib/Controller/ShareAPIController.php","line":615,"function":"canAccessShare","class":"OCA\Files_Sharing\Controller\ShareAPIController","type":"->","args":[{"class":"OC\Share20\Share"}]},{"file":"/s/www/nextcloud/apps/files_sharing/lib/Controller/ShareAPIController.php","line":763,"function":"getSharedWithMe","class":"OCA\Files_Sharing\Controller\ShareAPIController","type":"->","args":[{"class":"OC\Files\Node\Folder"},false]},{"file":"/s/www/nextcloud/apps/files_sharing/lib/Controller/ShareAPIController.php","line":738,"function":"getFormattedShares","class":"OCA\Files_Sharing\Controller\ShareAPIController","type":"->","args":["jsi",{"class":"OC\Files\Node\Folder"},true,false,false,false]},{"file":"/s/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":170,"function":"getShares","class":"OCA\Files_Sharing\Controller\ShareAPIController","type":"->","args":["true","false","false","/Business/Customer/Commit/Software/AppStudio8203","false"]},{"file":"/s/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":99,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->","args":[{"class":"OCA\Files_Sharing\Controller\ShareAPIController"},"getShares"]},{"file":"/s/www/nextcloud/lib/private/AppFramework/App.php","line":125,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->","args":[{"class":"OCA\Files_Sharing\Controller\ShareAPIController"},"getShares"]},{"file":"/s/www/nextcloud/lib/private/AppFramework/Routing/RouteActionHandler.php","line":47,"function":"main","class":"OC\AppFramework\App","type":"::","args":["OCA\Files_Sharing\Controller\ShareAPIController","getShares",{"class":"OC\AppFramework\DependencyInjection\DIContainer"},{"_route":"ocs.files_sharing.ShareAPI.getShares"}]},{"function":"__invoke","class":"OC\AppFramework\Routing\RouteActionHandler","type":"->","args":[{"_route":"ocs.files_sharing.ShareAPI.getShares"}]},{"file":"/s/www/nextcloud/lib/private/Route/Router.php","line":299,"function":"call_user_func","args":[{"class":"OC\AppFramework\Routing\RouteActionHandler"},{"_route":"ocs.files_sharing.ShareAPI.getShares"}]},{"file":"/s/www/nextcloud/ocs/v1.php","line":82,"function":"match","class":"OC\Route\Router","type":"->","args":["/ocsapp/apps/files_sharing/api/v1/shares"]},{"file":"/s/www/nextcloud/ocs/v2.php","line":24,"args":["/s/www/nextcloud/ocs/v1.php"],"function":"require_once"}],"File":"/s/www/nextcloud/apps/circles/lib/Db/CirclesRequest.php","Line":198,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0","version":"18.0.7.1"}
{"reqId":"XxbCapnUypdTLz2lHHTkNwAAAEE","level":3,"time":"2020-07-21T10:24:43+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"PROPFIND","url":"/remote.php/dav/files/jsi/","message":" Backends provided no user object for lwlvl","userAgent":"davfs2/1.5.4 neon/0.30.2","version":"18.0.7.1"}
{"reqId":"XxbCapnUypdTLz2lHHTkNwAAAEE","level":3,"time":"2020-07-21T10:24:43+00:00","remoteAddr":"192.168.2.10","user":"jsi","app":"files","method":"PROPFIND","url":"/remote.php/dav/files/jsi/","message":" Backends provided no user object for lwlvl","userAgent":"davfs2/1.5.4 neon/0.30.2","version":"18.0.7.1"}

[SowaNMS]

So for me the problem was, that some circles cannot be found because they existed under a different user. Downloading - deleting - reuploading the content solved my problem. I moved these files someday from one user to another. This caused the problem I think.

[skjnldsv]

@tkolo does it still happens? I cannot reproduce the issue 🤔

[tkolo]

Yes, I can still reproduce it on my instance, Nextcloud 19.0.1

[skjnldsv]

Can you dump your addressbook table there please?

[tkolo]

there you go, dumped as CSV via pgadmin4:

"id","principaluri","displayname","uri","description","synctoken"
1,"principals/users/tkolosowski","Contacts","contacts",NULL,45
3,"principals/system/system","https://k**snip**.cloud","8e177f67bd4481a8c28f5c3ad66eab1f182b3e3f",NULL,1822
2,"principals/system/system","system","system","System addressbook which holds all users of this instance",388

The user from share in question probably comes from address book with ID 3

[skjnldsv]

3,"principals/system/system","https://k**snip**.cloud","8e177f67bd4481a8c28f5c3ad66eab1f182b3e3f",NULL,1822
2,"principals/system/system","system","system","System addressbook which holds all users of this instance",388

@georgehrke that is weird, right?

[georgehrke]

3,"principals/system/system","https://k**snip**.cloud","8e177f67bd4481a8c28f5c3ad66eab1f182b3e3f",NULL,1822

I have never seen this before. Definitely an invalid uri.

[tkolo]

I've masked the external cloud's URI for privacy purposes if that's what you're referring to.

[skjnldsv]

I've masked the external cloud's URI for privacy purposes if that's what you're referring to.

Not really. It's just a bit weird. You're using federated clouds?