Calendar App lädt Kalender nicht

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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • 31.0.6
  • Operating system and version (e.g., Ubuntu 24.04):
    • Unraid 7.1.4
  • Web server and version (e.g, Apache 2.4.25):
    • Unraid AIO Version
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • nginx 1.0.1
  • 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?
    • 2 days ago after some cert problems
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • AIO
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • no

Summary of the issue you are facing:

Kalender können nicht geladen werden. Termine können nicht angelegt werden.

Steps to replicate it (hint: details matter!):

Ich hatte vor kurzem ein Problem mit den Letsencrypt Zertifikaten. Diese haben den gesamten Login unmöglich gemacht. Diesen Fehler konnte ich beheben und die Nextcloud ist normal erreichbar. Heute ist mir aufgefallen, dass ich keinerlei Kalender anlegen kann und auch keine Termine. Unter der Protokollierung tauchen aber keine wirklichen Fehler auf.

Log entries

|Fehler|app_api|ConnectExceptioncURL error 6: Could not resolve host: nextcloud-aio-docker-socket-proxy (see libcurl - Error Codes) for http://nextcloud-aio-docker-socket-proxy:2375/v1.41/_ping

Could not connect to Docker daemon via http://nextcloud-aio-docker-socket-proxy:2375/v1.41/_ping|
| — | — |

Info no app in context RouteNotFoundExceptionUnable to generate a URL for the named route “tasks.page.index” as such route does not exist. 03.07.2025, 12:06:26
Info no app in context RouteNotFoundExceptionUnable to generate a URL for the named route “notes.page.index” as such route does not exist. 03.07.2025, 12:06:26
Info no app in context RouteNotFoundExceptionUnable to generate a URL for the named route “mail.page.index” as such route does not exist. 03.07.2025, 12:06:26
Info no app in context RouteNotFoundExceptionUnable to generate a URL for the named route “calendar.view.index” as such route does not exist. 03.07.2025, 12:06:26

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.

1 Like

Ich kenne mich zwar nicht in Bezug auf die exakte Docker-Konfiguration aus, aber die Meldung weißt nach meinem Verständnis auf ein DNS-Problem hin, da der Name “nextcloud-aio-docker-socket-proxy” nicht aufgelöst werden kann.

It looks like the calendar app can’t load due to missing routes, likely caused by the recent Let’s Encrypt and Docker socket proxy issues. The error “Could not resolve host: nextcloud-aio-docker-socket-proxy” suggests a connection problem with the Docker daemon. Try restarting the Docker service and ensure the socket proxy is correctly configured and reachable. Also, verify that the Calendar app is enabled and up to date. Clearing Nextcloud cache (occ maintenance:repair) might help. If issues persist, check your reverse proxy settings and DNS resolution for internal Docker hostnames.

I now found the problem. Its not working with my VPN Based Browser at work. Any other connection is working and showing everything correctly. The Errors are gone too.