#1 [ROOT]/libraries/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/var/www/xxxx...')
#2 [ROOT]/libraries/src/Autoload/ClassLoader.php(59): Composer\Autoload\ClassLoader->loadClass('Joomla\\CMS\\Http...')
#3 [ROOT]/libraries/src/Http/HttpFactory.php(55): Joomla\CMS\Autoload\ClassLoader->loadClass('Joomla\\CMS\\Http...')
#4 [ROOT]/libraries/src/Updater/UpdateAdapter.php(250): Joomla\CMS\Http\HttpFactory::getHttp(Object(Joomla\Registry\Registry))
#5 [ROOT]/libraries/src/Updater/Adapter/CollectionAdapter.php(216):
Joomla\CMS\Updater\UpdateAdapter->getUpdateSiteResponse(Array)
#6 [ROOT]/libraries/src/Updater/Updater.php(264): Joomla\CMS\Updater\Adapter\CollectionAdapter->findUpdate(Array)
#7 [ROOT]/libraries/src/Updater/Updater.php(165): Joomla\CMS\Updater\Updater->getUpdateObjectsForSite(Array, 4, true)
#8
[ROOT]/administrator/components/com_joomlaupdate/src/Model/UpdateModel.php(165): Joomla\CMS\Updater\Updater->findUpdates(700, 21600, 4, true)
#9
[ROOT]/administrator/components/com_joomlaupdate/src/Controller/DisplayController.php(70):
Joomla\Component\Joomlaupdate\Administrator\Model\UpdateModel->refreshUpdates()
#10 [ROOT]/libraries/src/MVC/Controller/BaseController.php(672):
Joomla\Component\Joomlaupdate\Administrator\Controller\DisplayController->display()
#11 [ROOT]/libraries/src/Dispatcher/ComponentDispatcher.php(143): Joomla\CMS\MVC\Controller\BaseController->execute('display')
#12 [ROOT]/libraries/src/Component/ComponentHelper.php(355): Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch()
#13 [ROOT]/libraries/src/Application/AdministratorApplication.php(143):
Joomla\CMS\Component\ComponentHelper::renderComponent('com_joomlaupdat...')
#14 [ROOT]/libraries/src/Application/AdministratorApplication.php(186): Joomla\CMS\Application\AdministratorApplication->dispatch()
#15 [ROOT]/libraries/src/Application/CMSApplication.php(294): Joomla\CMS\Application\AdministratorApplication->doExecute()
#16 [ROOT]/administrator/includes/app.php(61): Joomla\CMS\Application\CMSApplication->execute()
#17 [ROOT]/administrator/index.php(32): require_once('/var/www/xxxx...')
#18 {main}