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[Bug]: Application without an icon is causing a runtime exception

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Nadie ha tomado este issue todavía.

Evaluación

Dificultad
2/5
Tiempo estimado
1-3 horas
Aptitud para principiantes
72/100
Tipo de issue
Error
Claridad
Bien especificado
Estado de actividad
Tranquilo
Stack tecnológico
php
Área
backend

Línea de trabajo

Comienza con lib/private/NavigationManager.php y lib/private/URLGenerator.php; después, reproduce el fallo usando una app generada cuyo appinfo/info.xml omita el icono de navegación. Rastrea cómo se resuelve la ruta del icono predeterminado. Se considera terminado cuando una app habilitada sin esa entrada opcional carga la interfaz web habitual sin una excepción en tiempo de ejecución.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

0. Needs triage 32-feedback bug
⚠️ This issue respects the following points: ⚠️
Bug description

A third-party application without a navigations/navigation/icon entry in the appinfo/info.xml file is causing a runtime exception once the app is enabled, because the default-app-icon.svg file cannot be found.

The issue seems to be that the default-app-icon.svg file is shipped in this folder:

core/img/places/default-app-icon.svg

The lib/private/NavigationManager.php tries to get the imagePath like this:

if ($icon === null) {
  $icon = $this->urlGenerator->imagePath('core', 'default-app-icon');
}

The imagePath function in the lib/private/URLGenerator.php file has a very large if/else block for searching all kinds of folders, but the core/img/places folder is not part of that.

Based on the developer manual the navigations/navigation/icon entry is optional, so Nextcloud should be able to handle it:

https://docs.nextcloud.com/server/latest/developer_manual/app_development/info.html

Steps to reproduce

  1. Have a working Nextcloud installation, make sure the web interface works

  2. Generate a helloworld application with the application generator:

    https://apps.nextcloud.com/developer/apps/generate

  3. Extract the archive, put it into the apps folder, give it proper permissions, etc.

  4. Edit the appinfo/info.xml file manually, remove the navigations/navigation/icon line entirely.

  5. Enable the application with occ app:enable helloworld

  6. Refresh the Nextcloud page in your browser, you should see a runtime exception with an error message

Expected behavior

Nextcloud should display the usual web interface instead of the runtime exception.

Nextcloud Server version

32

Operating system

Other

PHP engine version

PHP 8.4

Web server

Nginx

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?
  • Default user-backend (database)
  • LDAP/ Active Directory
  • SSO - SAML
  • Other
Configuration report
List of activated Apps
Nextcloud Signing status
Nextcloud Logs
{"reqId":"lpHmBHRz36uuCcFhxJ2V","level":3,"time":"2026-04-20T11:31:45+00:00","remoteAddr":"192.168.2.200","user":"udi","app":"index","method":"GET","url":"/index.phpboard/","scriptName":"/index.php","message":"image not found: image:default-app-icon webroot: serverroot:/var/www/nextcloud/htdocs","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0","version":"32.0.6.1","exception":{"Exception":"RuntimeException","Message":"image not found: image:default-app-icon webroot: serverroot:/var/www/nextcloud/htdocs","Code":0,"Trace":[{"file":"/var/www/nextcloud/htdocs/lib/private/NavigationManager.php","line":378,"function":"imagePath","class":"OC\\URLGenerator","type":"->","args":["core","default-app-icon"]},{"file":"/var/www/nextcloud/htdocs/lib/private/NavigationManager.php","line":125,"function":"init","class":"OC\\NavigationManager","type":"->","args":[]},{"file":"/var/www/nextcloud/htdocs/lib/private/TemplateLayout.php","line":77,"function":"getAll","class":"OC\\NavigationManager","type":"->","args":[]},{"file":"/var/www/nextcloud/htdocs/lib/private/Template/Template.php","line":115,"function":"getPageTemplate","class":"OC\\TemplateLayout","type":"->","args":["user","dashboard"]},{"file":"/var/www/nextcloud/htdocs/lib/public/AppFramework/Http/TemplateResponse.php","line":195,"function":"fetchPage","class":"OC\\Template\\Template","type":"->","args":[{"id-app-content":"#app-dashboard","id-app-navigation":null,"pageTitle":"Ir\u00e1ny\u00edt\u00f3pult"}]},{"file":"/var/www/nextcloud/htdocs/lib/private/AppFramework/Http/Dispatcher.php","line":163,"function":"render","class":"OCP\\AppFramework\\Http\\TemplateResponse","type":"->","args":[]},{"file":"/var/www/nextcloud/htdocs/lib/private/AppFramework/App.php","line":153,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Dashboard\\Controller\\DashboardController"},"index"]},{"file":"/var/www/nextcloud/htdocs/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Dashboard\\Controller\\DashboardController","index",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"dashboard.dashboard.index"}]},{"file":"/var/www/nextcloud/htdocs/lib/base.php","line":1091,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/dashboard/"]},{"file":"/var/www/nextcloud/htdocs/index.php","line":25,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/nextcloud/htdocs/lib/private/URLGenerator.php","Line":252,"message":"image not found: image:default-app-icon webroot: serverroot:/var/www/nextcloud/htdocs","exception":{},"CustomMessage":"image not found: image:default-app-icon webroot: serverroot:/var/www/nextcloud/htdocs"}}
Additional info

No response

Lenguaje dominante
PHP
Estrellas
37k
Forks
5.3k
Merge medio
2 d 1 h
PR fusionados (30 d)
723

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