# Omeka-s post install
**URL:** https://forum.yunohost.org/t/omeka-s-post-install/40037
**Category:** Support apps
**Tags:** omeka-s, french
**Created:** [September 13, 2025, 10:02am UTC](https://forum.yunohost.org/t/omeka-s-post-install/40037 "2025-09-13T10:02:02Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@pbb](https://forum.yunohost.org/u/pbb)
#### Post date: [September 13, 2025, 10:02am UTC](https://forum.yunohost.org/t/omeka-s-post-install/40037/1 "2025-09-13T10:02:03Z")
**What type of hardware are you using** : Raspberry Pi 3, 4+
**What YunoHost version are you running** : 12.1.22
**What app is this about** : omeka-s
### Describe your issue
After successfully installing Omeka-S, the first time you use it, Omeka-S asks you to create a new user. After completing this page and validating, Omeka-S displays an error.
### Share relevant logs or error messages
/var/www/omeka-s/logs/application.log :
2025-09-13T09:49:31+00:00 ERR (3): ValueError: xml\_set\_element\_handler(): Argument #2 ($start\_handler) an object must be set via xml\_set\_object() to be able to lookup method in /var/www/omeka-s/vendor/sweetrdf/easyrdf/lib/Parser/RdfXml.php:94
Stack trace:
#0 /var/www/omeka-s/vendor/sweetrdf/easyrdf/lib/Parser/RdfXml.php(94): xml\_set\_element\_handler()
#1 /var/www/omeka-s/vendor/sweetrdf/easyrdf/lib/Parser/RdfXml.php(801): EasyRdf\Parser\RdfXml-\>initXMLParser()
#2 /var/www/omeka-s/vendor/sweetrdf/easyrdf/lib/Graph.php(252): EasyRdf\Parser\RdfXml-\>parse()
#3 /var/www/omeka-s/vendor/sweetrdf/easyrdf/lib/Graph.php(270): EasyRdf\Graph-\>parse()
#4 /var/www/omeka-s/application/src/Stdlib/RdfImporter.php(105): EasyRdf\Graph-\>parseFile()
#5 /var/www/omeka-s/application/src/Stdlib/RdfImporter.php(156): Omeka\Stdlib\RdfImporter-\>getMembers()
#6 /var/www/omeka-s/application/src/Installation/Task/InstallDefaultVocabulariesTask.php(71): Omeka\Stdlib\RdfImporter-\>import()
#7 /var/www/omeka-s/application/src/Installation/Installer.php(73): Omeka\Installation\Task\InstallDefaultVocabulariesTask-\>perform()
#8 /var/www/omeka-s/application/src/Controller/InstallController.php(50): Omeka\Installation\Installer-\>install()
#9 /var/www/omeka-s/vendor/laminas/laminas-mvc/src/Controller/AbstractActionController.php(71): Omeka\Controller\InstallController-\>indexAction()
#10 /var/www/omeka-s/vendor/laminas/laminas-eventmanager/src/EventManager.php(319): Laminas\Mvc\Controller\AbstractActionController-\>onDispatch()
#11 /var/www/omeka-s/vendor/laminas/laminas-eventmanager/src/EventManager.php(179): Laminas\EventManager\EventManager-\>triggerListeners()
#12 /var/www/omeka-s/vendor/laminas/laminas-mvc/src/Controller/AbstractController.php(97): Laminas\EventManager\EventManager-\>triggerEventUntil()
#13 /var/www/omeka-s/vendor/laminas/laminas-mvc/src/DispatchListener.php(132): Laminas\Mvc\Controller\AbstractController-\>dispatch()
#14 /var/www/omeka-s/vendor/laminas/laminas-eventmanager/src/EventManager.php(319): Laminas\Mvc\DispatchListener-\>onDispatch()
#15 /var/www/omeka-s/vendor/laminas/laminas-eventmanager/src/EventManager.php(179): Laminas\EventManager\EventManager-\>triggerListeners()
#16 /var/www/omeka-s/vendor/laminas/laminas-mvc/src/Application.php(325): Laminas\EventManager\EventManager-\>triggerEventUntil()
#17 /var/www/omeka-s/index.php(21): Laminas\Mvc\Application-\>run()
#18 {main}
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### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [September 28, 2025, 10:02am UTC](https://forum.yunohost.org/t/omeka-s-post-install/40037/2 "2025-09-28T10:02:11Z")
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