Migrating and Upgrading to Joomla! 5.x • Update problems 4.4.2 to 5.0.2

I have try to update from 4.4.2 to 5.0.2 but got the following problemes.

RuntimeException:
Failed to start the session because headers have already been sent by "/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/vendor/joomla/filesystem/src/Folder.php" at line 444.

at /customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/vendor/joomla/session/src/Storage/NativeStorage.php:454
at Joomla\Session\Storage\NativeStorage->start()
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Session/Storage/JoomlaStorage.php:313)
at Joomla\CMS\Session\Storage\JoomlaStorage->start()
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/vendor/joomla/session/src/Session.php:396)
at Joomla\Session\Session->start()
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/vendor/joomla/session/src/Session.php:327)
at Joomla\Session\Session->has('user')
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Session/Session.php:194)
at Joomla\CMS\Session\Session->get('user')
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Factory.php:372)
at Joomla\CMS\Factory::getUser()
(/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates/atum/error.php:18)
at require('/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates/atum/error.php')
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Document/HtmlDocument.php:731)
at Joomla\CMS\Document\HtmlDocument->_loadTemplate('/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates/atum', 'error.php')
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Document/HtmlDocument.php:785)
at Joomla\CMS\Document\HtmlDocument->_fetchTemplate(array('template' => 'atum', 'directory' => '/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates', 'debug' => false, 'csp_nonce' => null, 'templateInherits' => '', 'params' => object(Registry), 'file' => 'error.php'))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Document/HtmlDocument.php:622)
at Joomla\CMS\Document\HtmlDocument->parse(array('template' => 'atum', 'directory' => '/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates', 'debug' => false, 'csp_nonce' => null, 'templateInherits' => '', 'params' => object(Registry), 'file' => 'error.php'))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Document/HtmlDocument.php:640)
at Joomla\CMS\Document\HtmlDocument->render(false, array('template' => 'atum', 'directory' => '/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates', 'debug' => false, 'csp_nonce' => null, 'templateInherits' => '', 'params' => object(Registry), 'file' => 'error.php'))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Document/ErrorDocument.php:139)
at Joomla\CMS\Document\ErrorDocument->render(false, array('template' => 'atum', 'directory' => '/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/templates', 'debug' => false, 'csp_nonce' => null, 'templateInherits' => '', 'params' => object(Registry), 'file' => 'error.php'))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Error/Renderer/HtmlRenderer.php:70)
at Joomla\CMS\Error\Renderer\HtmlRenderer->render(object(RuntimeException))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Exception/ExceptionHandler.php:136)
at Joomla\CMS\Exception\ExceptionHandler::render(object(RuntimeException))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Exception/ExceptionHandler.php:73)
at Joomla\CMS\Exception\ExceptionHandler::handleException(object(RuntimeException))
(/customers/2/b/d/matsimgundogs.dk/httpd.www/libraries/src/Application/CMSApplication.php:336)
at Joomla\CMS\Application\CMSApplication->execute()
(/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/includes/app.php:58)
at require_once('/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/includes/app.php')
(/customers/2/b/d/matsimgundogs.dk/httpd.www/administrator/index.php:32)

Can anyone help me?

Statistics: Posted by jan_hovard — Tue Jan 16, 2024 5:02 pm

---