I’m not sure if tag nc33 revers to the desktop or the server version but in this case it does not matter.
Client Version 33.0.2 AppImage on Fedora 43 and server version 33.0.2 in a docker on debian.
After being a day at work and coming home I see:
The encrypted files are missing on my workstation. And sync seems to be stalled.
What would be the proper troubleshooting steps to not losing data?
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version:
Nextcloud 33.0.2
- Operating system and version:
#1 SMP PREEMPT Debian 1:6.12.75-1+rpt1~bookworm (2026-03-11)
- Web server and version:
Server version: Apache/2.4.66 (Debian)
- Reverse proxy and version:
nginx version: openresty/1.27.1.2
- PHP version:
PHP 8.4.19 (cli) (built: Mar 16 2026 22:27:46) (NTS)
- Is this the first time you’ve seen this error? (Yes / No):
yes
- When did this problem seem to first start?
recently
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
OMV Container
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issues you are facing:
Errors in sync
Steps to replicate it (hint: details matter!):
Log entries
Nextcloud
{"reqId":"wL0OY8SdPOoWzM11Yh4B","level":3,"time":"2026-04-05T22:01:27+00:00","remoteAddr":"83.97.85.45","user":"johannes","app":"PHP","method":"GET","url":"/ocs/v1.php/cloud/capabilities?format=json","scriptName":"/ocs/v1.php","message":"OCA\\Onlyoffice\\FileCreator::create(): Implicitly marking parameter $templateId as nullable is deprecated, the explicit nullable type must be used instead at /var/www/html/custom_apps/onlyoffice/lib/FileCreator.php#145","userAgent":"Mozilla/5.0 (Linux) mirall/33.0.2 (build 38494) (Nextcloud, fedora-6.19.10-200.fc43.x86_64 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"33.0.2.2","clientReqId":"e2eaa9b7-9d7c-4622-bc66-9784ce21b159","data":{"app":"PHP"}}
{"reqId":"9dL1ntrDaU8XQkwC26i6","level":3,"time":"2026-04-06T06:59:45+00:00","remoteAddr":"83.97.85.45","user":"king_admin","app":"jsresourceloader","method":"GET","url":"/settings/admin/onlyoffice","scriptName":"/index.php","message":"Could not find resource core/js/dist/systemtags.js to load","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0","version":"33.0.2.2","data":{"app":"jsresourceloader"}}
{"reqId":"XMGVWSPAmSUBb79tcPYo","level":3,"time":"2026-04-06T22:01:54+00:00","remoteAddr":"83.97.85.45","user":"johannes","app":"PHP","method":"GET","url":"/ocs/v1.php/cloud/capabilities?format=json","scriptName":"/ocs/v1.php","message":"OCA\\Onlyoffice\\FileCreator::create(): Implicitly marking parameter $templateId as nullable is deprecated, the explicit nullable type must be used instead at /var/www/html/custom_apps/onlyoffice/lib/FileCreator.php#145","userAgent":"Mozilla/5.0 (Linux) mirall/33.0.2 (build 38494) (Nextcloud, fedora-6.19.10-200.fc43.x86_64 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"33.0.2.2","clientReqId":"a2c4b0a9-cc26-4afc-b2fb-6c397004edb9","data":{"app":"PHP"}}
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{main}\",\"previous\":{\"class\":\"OCP\\Lock\\LockedException\",\"message\":\"\\\"files/d14f6589fb6ca862a292049ef1209246\\\"(\\\"files/Notes\\\") is locked, existing lock on file: 3 shared locks\",\"code\":0,\"file\":\"/var/www/html/lib/private/Files/Storage/Common.php:704\",\"trace\":\"#0 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Common->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#1 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#2 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#3 /var/www/html/lib/private/Files/View.php(2096): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#4 /var/www/html/lib/private/Files/View.php(1201): OC\\Files\\View->changeLock('/johannes/files...', 2)\\n#5 /var/www/html/lib/private/Files/View.php(213): OC\\Files\\View->basicOperation('mkdir', '/johannes/files...', Array)\\n#6 /var/www/html/lib/private/Files/Node/Folder.php(134): OC\\Files\\View->mkdir('/johannes/files...')\\n#7 [internal function]: OC\\Files\\Node\\Folder->newFolder('Notes')\\n#8 /var/www/html/lib/private/Files/Node/LazyFolder.php(65): call_user_func_array(Array, Array)\\n#9 /var/www/html/lib/private/Files/Node/LazyFolder.php(433): OC\\Files\\Node\\LazyFolder->__call('newFolder', Array)\\n#10 /var/www/html/custom_apps/notes/lib/Service/NoteUtil.php(220): OC\\Files\\Node\\LazyFolder->newFolder('Notes')\\n#11 /var/www/html/custom_apps/notes/lib/Service/NotesService.php(162): OCA\\Notes\\Service\\NoteUtil->getOrCreateNotesFolder('johannes', true)\\n#12 /var/www/html/custom_apps/notes/lib/Service/NotesService.php(36): OCA\\Notes\\Service\\NotesService->getNotesFolder('johannes', true)\\n#13 /var/www/html/custom_apps/notes/lib/Controller/Helper.php(82): OCA\\Notes\\Service\\NotesService->getAll('johannes', true)\\n#14 /var/www/html/custom_apps/notes/lib/Controller/NotesController.php(81): OCA\\Notes\\Controller\\Helper->getNotesAndCategories(1775555682, Array)\\n#15 /var/www/html/custom_apps/notes/lib/Service/Util.php(31): OCA\\Notes\\Controller\\NotesController->{closure:OCA\\Notes\\Controller\\NotesController::index():67}()\\n#16 /var/www/html/custom_apps/notes/lib/Controller/Helper.php(146): OCA\\Notes\\Service\\Util::retryIfLocked(Object(Closure))\\n#17 /var/www/html/custom_apps/notes/lib/Controller/NotesController.php(67): OCA\\Notes\\Controller\\Helper->handleErrorResponse(Object(Closure))\\n#18 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(205): OCA\\Notes\\Controller\\NotesController->index(1775555682)\\n#19 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(118): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Notes\\Controller\\NotesController), 'index')\\n#20 /var/www/html/lib/private/AppFramework/App.php(153): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Notes\\Controller\\NotesController), 'index')\\n#21 /var/www/html/lib/private/Route/Router.php(321): OC\\AppFramework\\App::main('OCA\\\\Notes\\\\Contr...', 'index', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#22 /var/www/html/lib/base.php(1155): OC\\Route\\Router->match('/apps/notes/not...')\\n#23 /var/www/html/index.php(25): OC::handleRequest()\\n#24 {main}\",\"previous\":{\"class\":\"OCP\\Lock\\LockedException\",\"message\":\"\\\"files/d14f6589fb6ca862a292049ef1209246\\\" is locked, existing lock on file: 3 shared locks\",\"code\":0,\"file\":\"/var/www/html/lib/private/Lock/MemcacheLockingProvider.php:126\",\"trace\":\"#0 /var/www/html/lib/private/Files/Storage/Common.php(702): OC\\Lock\\MemcacheLockingProvider->changeLock('files/d14f6589f...', 2)\\n#1 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Common->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#2 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#3 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(318): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#4 /var/www/html/lib/private/Files/View.php(2096): OC\\Files\\Storage\\Wrapper\\Wrapper->changeLock('files/Notes', 2, Object(OC\\Lock\\MemcacheLockingProvider))\\n#5 /var/www/html/lib/private/Files/View.php(1201): OC\\Files\\View->changeLock('/johannes/files...', 2)\\n#6 /var/www/html/lib/private/Files/View.php(213): OC\\Files\\View->basicOperation('mkdir', '/johannes/files...', Array)\\n#7 /var/www/html/lib/private/Files/Node/Folder.php(134): OC\\Files\\View->mkdir('/johannes/files...')\\n#8 [internal function]: OC\\Files\\Node\\Folder->newFolder('Notes')\\n#9 /var/www/html/lib/private/Files/Node/LazyFolder.php(65): call_user_func_array(Array, Array)\\n#10 /var/www/html/lib/private/Files/Node/LazyFolder.php(433): OC\\Files\\Node\\LazyFolder->__call('newFolder', Array)\\n#11 /var/www/html/custom_apps/notes/lib/Service/NoteUtil.php(220): OC\\Files\\Node\\LazyFolder->newFolder('Notes')\\n#12 /var/www/html/custom_apps/notes/lib/Service/NotesService.php(162): OCA\\Notes\\Service\\NoteUtil->getOrCreateNotesFolder('johannes', true)\\n#13 /var/www/html/custom_apps/notes/lib/Service/NotesService.php(36): OCA\\Notes\\Service\\NotesService->getNotesFolder('johannes', true)\\n#14 /var/www/html/custom_apps/notes/lib/Controller/Helper.php(82): OCA\\Notes\\Service\\NotesService->getAll('johannes', true)\\n#15 /var/www/html/custom_apps/notes/lib/Controller/NotesController.php(81): OCA\\Notes\\Controller\\Helper->getNotesAndCategories(1775555682, Array)\\n#16 /var/www/html/custom_apps/notes/lib/Service/Util.php(31): OCA\\Notes\\Controller\\NotesController->{closure:OCA\\Notes\\Controller\\NotesController::index():67}()\\n#17 /var/www/html/custom_apps/notes/lib/Controller/Helper.php(146): OCA\\Notes\\Service\\Util::retryIfLocked(Object(Closure))\\n#18 /var/www/html/custom_apps/notes/lib/Controller/NotesController.php(67): OCA\\Notes\\Controller\\Helper->handleErrorResponse(Object(Closure))\\n#19 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(205): OCA\\Notes\\Controller\\NotesController->index(1775555682)\\n#20 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(118): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Notes\\Controller\\NotesController), 'index')\\n#21 /var/www/html/lib/private/AppFramework/App.php(153): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Notes\\Controller\\NotesController), 'index')\\n#22 /var/www/html/lib/private/Route/Router.php(321): OC\\AppFramework\\App::main('OCA\\\\Notes\\\\Contr...', 'index', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#23 /var/www/html/lib/base.php(1155): OC\\Route\\Router->match('/apps/notes/not...')\\n#24 /var/www/html/index.php(25): OC::handleRequest()\\n#25 {main}\"}}}","CustomMessage":"Controller failed with OCP\\Lock\\LockedException"}}
Web Browser
Apps
Enabled:
- activity: 6.0.0
- admin_audit: 1.23.0
- bookmarks: 16.1.3
- brewmemo: 0.6.0
- bruteforcesettings: 6.0.0
- calendar: 6.2.2
- circles: 33.0.0
- cloud_federation_api: 1.17.0
- comments: 1.23.0
- contacts: 8.4.3
- contactsinteraction: 1.14.1
- cookbook: 0.11.6
- dashboard: 7.13.0
- dav: 1.36.0
- encryption: 2.21.0
- end_to_end_encryption: 2.0.2
- federatedfilesharing: 1.23.0
- federation: 1.23.0
- files: 2.5.0
- files_downloadlimit: 5.1.0
- files_external: 1.25.1
- files_pdfviewer: 6.0.0
- files_reminders: 1.6.0
- files_sharing: 1.25.2
- files_trashbin: 1.23.0
- files_versions: 1.26.0
- firstrunwizard: 6.0.0
- fulltextsearch: 33.0.0
- groupfolders: 21.0.6
- logreader: 6.0.0
- lookup_server_connector: 1.21.0
- nextcloud_announcements: 5.0.0
- notes: 4.13.1
- notifications: 6.0.0
- oauth2: 1.21.0
- onlyoffice: 10.0.0
- password_policy: 5.0.0
- photos: 6.0.0
- privacy: 5.0.0
- profile: 1.2.0
- provisioning_api: 1.23.0
- recommendations: 6.0.0
- related_resources: 4.0.0
- serverinfo: 5.0.0
- settings: 1.16.0
- sharebymail: 1.23.0
- support: 5.0.0
- survey_client: 5.0.0
- suspicious_login: 11.0.0
- systemtags: 1.23.0
- text: 7.0.0
- theming: 2.8.0
- twofactor_backupcodes: 1.22.0
- twofactor_nextcloud_notification: 7.0.0
- twofactor_totp: 15.0.0
- updatenotification: 1.23.0
- uppush: 2.4.0
- user_status: 1.13.0
- viewer: 6.0.0
- weather_status: 1.13.0
- webhook_listeners: 1.5.0
- workflowengine: 2.15.0
Disabled:- app_api: 33.0.0 (installed 32.0.0)
- camerarawpreviews: 0.8.8 (installed 0.8.8)
- keeweb: 0.6.22 (installed 0.6.22)
- richdocuments: 10.1.2 (installed 10.1.2)
- testing: 1.23.0
- user_ldap: 1.24.0 (installed 1.22.0)
EDIT: When i start the AppImage from terminal this is what I see:
$ Applications/Nextcloud-33.0.2-x86_64.AppImage
qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in ""
nextcloud.gui.application: Migrating old config from "/home/j/.local/share/Nextcloud" to "/home/j/.config/Nextcloud"
nextcloud.gui.application: Failed to move the old config directory to its new location ( "/home/j/.local/share/Nextcloud" to "/home/j/.config/Nextcloud" )
nextcloud.gui.application: Will move the individual files QList("cloud.sbw.media_sync.log", "kingma.cloud_sync.log", "Nextcloud_sync.log")
nextcloud.gui.application: Fallback move of "cloud.sbw.media_sync.log" also failed
nextcloud.gui.application: Fallback move of "kingma.cloud_sync.log" also failed
nextcloud.gui.application: Fallback move of "Nextcloud_sync.log" also failed
This it the logfile for the broken Nextcloud connection:
#=#=#=# Syncrun started 2026-04-07T17:06:56Z
#=#=#=#=# Propagation starts 2026-04-07T17:07:00Z (last step: 4467 msec, total: 4467 msec)
||Encrypted/VPN/.cert/ca.crt|8|2|1768326240|0f64dba53df0475cff06a23d329e4fed|1407|00034311ocldln2fgpb5|2|File with name /Encrypted/VPN/.cert/ca.crt could not be located|404|0|0|49fa89c7-c5d3-4126-94ac-bf1253ac4bb5|
||Encrypted/VPN/.cert/client.crt|8|2|1768326030|b1aa674e3ed988eccd36dc1540c723f2|1273|00034318ocldln2fgpb5|2|File with name /Encrypted/VPN/.cert/client.crt could not be located|404|0|0|62ba30d5-9ce4-4b8b-9f72-3b7d07753d58|
||Encrypted/VPN/.cert/client.ovpn|8|2|1762168798|eb1de8c012b729a1b7a3ea99d6c8a50b|508|00034324ocldln2fgpb5|2|File with name /Encrypted/VPN/.cert/client.ovpn could not be located|404|0|0|d87d0ef5-0793-43f9-adc5-61108b88e607|
||Encrypted/VPN/.cert/client.pem|8|2|1768326133|f252c4d3e97f4aa5b6219e8dd794e63d|1720|00034330ocldln2fgpb5|2|File with name /Encrypted/VPN/.cert/client.pem could not be located|404|0|0|f3d3330b-e4a5-491f-894e-a60d89cb8fa1|
||Encrypted/VPN/SBW.txt|8|2|1768335170|dea313e2499557aba46e64e6e8a6f8b9|801|00034336ocldln2fgpb5|2|File with name /Encrypted/VPN/SBW.txt could not be located|404|0|0|3f9ba738-8bfe-4e04-97cd-ea12ce55011c|
||Encrypted/VPN/sbw.ovpn|8|2|1768330590|b3e21a7fe49b51637f9788ed54c4bb36|493|00034342ocldln2fgpb5|2|File with name /Encrypted/VPN/sbw.ovpn could not be located|404|0|0|8c1daaeb-a15b-4f4a-85a2-86d798fc6049|
||Encrypted/VPN/sbw_openvpn.sh|8|2|1768334677|a2b52a761ba71f7b28f0bb18f76b8ed2|352|00034348ocldln2fgpb5|2|File with name /Encrypted/VPN/sbw_openvpn.sh could not be located|404|0|0|ce319932-11c7-48eb-aa75-aafcb0c31ede|
||Encrypted/insta dashboard/urls.txt|8|2|1774882143|f1a63c660f43259b9fec9ac445b5e78f|3326|00034390ocldln2fgpb5|2|File with name /Encrypted/insta dashboard/urls.txt could not be located|404|0|0|0a37d795-fe7e-4ce7-9e40-61d3883a2438|
||Encrypted/unterschrift.png|8|2|1773644377|e88551b407b6037285fabda2260edff1|5939|00034354ocldln2fgpb5|2|File with name /Encrypted/unterschrift.png could not be located|404|0|0|b2c84c70-02a1-4d53-b383-c65184cc4aa9|
#=#=#=# Syncrun finished 2026-04-07T17:07:04Z (last step: 3593 msec, total: 8060 msec)