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Getting help
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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 (e.g., 29.x.x):
-
33.0.0-1
-
- Operating system and version (e.g., Ubuntu 24.04):
archlinux latest
- Web server and version (e.g, Apache 2.4.25):
nginx 1.28.2
- Reverse proxy and version _(e.g. nginx 1.27.2)
nginx 1.28.2
- PHP version (e.g, 8.3):
php-legacy 8.3.30
- Is this the first time you’ve seen this error? (Yes / No):
yes
- When did this problem seem to first start?
around Feb 22, after upgrading to 33.0.0
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
pacman
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
I am using PostgreSQL 18.2.
After upgrading to 33.0.0, the files won’t show up on web portal. Desktop client is fine (so WebDAV is running well). It keeps loading. I found 1 error on the “network” tab of development . I found some errors on the console – one resource is missing.
Steps to replicate it (hint: details matter!)
The bug is there for a day. Restarting will not fix it. I don’t know if a fresh install can replicate it.
I have tried re-installing nextcloud with pacman, re-assigning file ownership and permissions, occ maintanance related commands, and occ file:scan –-all.
Log entries
From web console (I masked out some personal information)
The resource from “https://nc.example.com/apps/files_versions/css/sidebar-tab.css?v=82be69eb-28” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff). files
Uncaught Error: Invalid entry
validateEntry index.mjs:473
registerEntry index.mjs:445
T index.mjs:501
30312 newFromTemplate.ts:51
30312 newFromTemplate.ts:50
30312 init.ts:50
Webpack 5
index.mjs:473:13
[WARN] viewer: Some mimes were ignored because they are not enabled in the server previews config
Object { app: "viewer", uid: "username", level: 2, ignoredMimes: (3) […] }
index.mjs:44:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.oasis.opendocument.text", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.oasis.opendocument.spreadsheet", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.oasis.opendocument.graphics", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.oasis.opendocument.presentation", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.lotus-wordpro", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.visio", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/vnd.wordperfect", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "application/rtf", handler: {…} }
index.mjs:47:17
[ERROR] viewer: The following mime is already registered
Object { app: "viewer", uid: "username", level: 2, mime: "text/rtf", handler: {…} }
index.mjs:47:17
[WARN] @nextcloud/vue: You need to fill either the text or the ariaLabel props in the button component.
Object { uid: "username", app: "@nextcloud/vue", level: 2, text: undefined, ariaLabel: null, instance: {…} }
index.mjs:44:17
[WARN] files: No current view after DOMContentLoaded, redirecting to the default view
Object { app: "files", uid: "username", level: 2 }
There is one failed resource in network:
https://nc.example.com/apps/files_versions/css/sidebar-tab.css?v=82be69eb-28
I checked the installing path /usr/share/webapps/nextcloud, and this file is missing (actually the whole css subdir is missing).
Nginx did not have meaningful error logs. The only log entry is related to sidebar-tab.css:
127.0.0.1 - - [23/Feb/2026:19:03:09 -0500] "GET /apps/files_versions/css/sidebar-tab.css?v=82be69eb-28 HTTP/1.1" 404 31 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0"
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
I did not find any logs higher or equal than warning level during this bug.
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
{
"system": {
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"log_type": "file",
"loglevel": 2,
"logfile": "\/var\/log\/nextcloud.log",
"apps_paths": [
{
"path": "\/usr\/share\/webapps\/nextcloud\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/lib\/nextcloud\/apps",
"url": "\/wapps",
"writable": true
}
],
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"10.0.0.112",
"nc.example.com",
],
"version": "33.0.0.16",
"overwrite.cli.url": "http:\/\/localhost",
"dbtype": "pgsql",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"dbport": 5432,
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"installed": true,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "US",
"theme": "",
"maintenance": false,
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"updater.release.channel": "stable",
"filelocking.enabled": true,
"memcache.local": "\\OC\\Memcache\\APCu",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379,
"timeout": 0,
"password": "***REMOVED SENSITIVE VALUE***"
},
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"mail_smtpauth": true,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"maintenance_window_start": 6,
"app_install_overwrite": [
"unsplash",
"files_rightclick"
],
"files.chunked_upload.max_size": 20971520
}
}
Apps
The output of occ app:list (if possible).
Enabled:
- activity: 6.0.0-dev.0
- circles: 33.0.0
- cloud_federation_api: 1.17.0
- comments: 1.23.0
- contactsinteraction: 1.14.1
- dashboard: 7.13.0
- dav: 1.36.0
- federatedfilesharing: 1.23.0
- federation: 1.23.0
- files: 2.5.0
- files_accesscontrol: 4.0.0
- files_automatedtagging: 4.0.0
- 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
- fileslibreofficeedit: 2.0.1
- firstrunwizard: 6.0.0-dev.0
- logreader: 6.0.0
- lookup_server_connector: 1.21.0
- nextcloud_announcements: 5.0.0
- notifications: 6.0.0
- oauth2: 1.21.0
- officeonline: 3.1.1
- password_policy: 5.0.0-dev.0
- phonetrack: 1.0.0
- photos: 6.0.0-dev.0
- privacy: 5.0.0-dev.0
- profile: 1.2.0
- provisioning_api: 1.23.0
- recommendations: 6.0.0-dev.0
- related_resources: 4.0.0-dev.0
- richdocuments: 10.1.0
- 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
- 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)
- bruteforcesettings: 6.0.0-dev.0 (installed 2.3.0)
- encryption: 2.21.0
- files_external: 1.25.1
- files_rightclick: 0.15.1 (installed 0.15.1)
- suspicious_login: 11.0.0-dev.0
- twofactor_nextcloud_notification: 7.0.0
- user_ldap: 1.24.0
Tips for increasing the likelihood of a response
- Use the
preformatted textformatting option in the editor for all log entries and configuration output. - If screenshots are useful, feel free to include them.
- If possible, also include key error output in text form so it can be searched for.
- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.
I have been using Nextcloud for 5 years and it is an essential tool in my daily life and work. Thanks for your effort, and hope my report can help to improve the stability of nextcloud!