Warning: Creating default object from empty value in templates/johannes_gruber/mod_global_articlelist.html5 on line 7

#0 templates/johannes_gruber/mod_global_articlelist.html5(7): __error(2, 'Creating defaul...', '/var/www/web395...', 7, Array)
#1 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/web395...')
#2 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse()
#3 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse()
#4 system/modules/core/modules/Module.php(311): Contao\FrontendTemplate->parse()
#5 system/modules/tags/modules/ModuleGlobalArticlelist.php(38): Contao\Module->generate()
#6 system/modules/core/elements/ContentModule.php(59): Contao\ModuleGlobalArticlelist->generate()
#7 system/modules/core/library/Contao/Controller.php(484): Contao\ContentModule->generate()
#8 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement(Object(Contao\ContentModel), 'main')
#9 system/modules/tags/modules/ModuleArticle.php(26): Contao\ModuleArticle->compile()
#10 system/modules/core/modules/Module.php(287): Aurealis\ModuleArticle->compile()
#11 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#12 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate(false)
#13 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#14 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#15 system/modules/i18nl10n/pages/PageI18nl10nRegular.php(85): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#16 system/modules/core/controllers/FrontendIndex.php(285): Verstaerker\I18nl10n\Pages\PageI18nl10nRegular->generate(Object(Contao\PageModel), true)
#17 index.php(20): Contao\FrontendIndex->run()
#18 {main}