The Basics
- Nextcloud Server version (e.g., 29.x.x):
33
- Operating system and version (e.g., Ubuntu 24.04):
- Docker 28
- Web server and version (e.g, Apache 2.4.25):
fpm
- Reverse proxy and version _(e.g. nginx 1.27.2)
caddy 2
- PHP version (e.g, 8.3):
8.4
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
Just after update
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Docker compose
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
Just update nextcloud, like normally
- Change version number on docker-compose file
- compose up to get new version
- Wait for stop updating
- Manually launch occ
- db:add-missing-columns
- db:add-missing-indices
- db:add-missing-primary-keys
- maintenance:repair --include-expensive
And go to my nextcloud URL => 502 error. I check caddy log => 502
I try to go on my nextcloud container via bypass caddy, always 502 error. And no errors, or hint, in nextcloud log.
Log entries
Nextcloud
nextcloud | Configuring Redis as session handler
nextcloud | => Searching for hook scripts (*.sh) to run, located in the folder "/docker-entrypoint-hooks.d/before-starting"
nextcloud | ==> Skipped: the "before-starting" folder is empty (or does not exist)
nextcloud | [17-Mar-2026 12:55:21] NOTICE: fpm is running, pid 1
nextcloud | [17-Mar-2026 12:55:21] NOTICE: ready to handle connections
Web server / Reverse Proxy
Caddy container log
{
"level": "error",
"ts": 1773747287.3833458,
"logger": "http.log.access.log0",
"msg": "handled request",
...
"status": 502,
}
Configuration
Nextcloud
The output of occ config:list system
{
"system": {
"memcache.distributed": "\\OC\\Memcache\\Redis",
"filelocking.enabled": true,
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"password": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/custom_apps",
"url": "\/custom_apps",
"writable": true
}
],
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"my-nextcloud.com"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "33.0.0.16",
"overwrite.cli.url": "https:\/\/box.digitaly.io",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"memcache.local": "\\OC\\Memcache\\APCu",
"theme": "",
"loglevel": 0,
"maintenance": false,
"app_install_overwrite": [
"previewgenerator",
"passman"
],
"upgrade.disable-web": true
}
}
Apps
The output of occ app:list (if possible).
Enabled:
- bruteforcesettings: 6.0.0-dev.0
- circles: 33.0.0
- cloud_federation_api: 1.17.0
- contactsinteraction: 1.14.1
- dav: 1.36.0
- federatedfilesharing: 1.23.0
- files: 2.5.0
- 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
- firstrunwizard: 6.0.0-dev.0
- logreader: 6.0.0
- lookup_server_connector: 1.21.0
- notifications: 6.0.0
- oauth2: 1.21.0
- passman: 2.4.12
- password_policy: 5.0.0-dev.0
- previewgenerator: 5.13.0
- privacy: 5.0.0-dev.0
- profile: 1.2.0
- provisioning_api: 1.23.0
- related_resources: 4.0.0-dev.0
- settings: 1.16.0
- 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
- viewer: 6.0.0-dev.0
- webhook_listeners: 1.5.0
- workflowengine: 2.15.0
Disabled:
- activity: 6.0.0-dev.0 (installed 2.14.3)
- admin_audit: 1.23.0
- app_api: 33.0.0 (installed 32.0.0)
- comments: 1.23.0 (installed 1.11.0)
- dashboard: 7.13.0 (installed 7.1.0)
- encryption: 2.21.0
- federation: 1.23.0 (installed 1.11.0)
- files_external: 1.25.1
- files_rightclick: 0.15.1 (installed 1.6.0)
- nextcloud_announcements: 5.0.0 (installed 1.10.0)
- photos: 6.0.0-dev.0 (installed 1.3.0)
- recommendations: 6.0.0-dev.0 (installed 1.0.0)
- serverinfo: 5.0.0-dev.0 (installed 1.11.0)
- sharebymail: 1.23.0 (installed 1.11.0)
- support: 5.0.0 (installed 1.4.0)
- survey_client: 5.0.0-dev.0 (installed 1.9.0)
- suspicious_login: 11.0.0-dev.0
- systemtags: 1.23.0 (installed 1.11.0)
- twofactor_nextcloud_notification: 7.0.0
- user_ldap: 1.24.0
- user_status: 1.13.0 (installed 1.1.1)
- weather_status: 1.13.0 (installed 1.1.0)