Fatal error: Uncaught TypeError: array_filter(): Argument #1 ($array) must be of type array, null given in /var/www/luebbering/htdocs/www/cms/extensions/Core/Images/classes/Plugins/ReferencesTeaser/Plugin.php:26 Stack trace: #0 /var/www/luebbering/htdocs/www/cms/extensions/Core/Images/classes/Plugins/ReferencesTeaser/Plugin.php(26): array_filter(NULL) #1 [internal function]: Frootbox\Ext\Core\Images\Plugins\ReferencesTeaser\Plugin->getReferences(Object(Frootbox\Ext\Core\Images\Plugins\References\Persistence\Repositories\References), Object(Frootbox\Session)) #2 /var/www/luebbering/htdocs/www/lib/php-di/invoker/src/Invoker.php(74): call_user_func_array(Array, Array) #3 /var/www/luebbering/htdocs/www/lib/php-di/php-di/src/Container.php(279): Invoker\Invoker->call(Array, Array) #4 /var/www/luebbering/htdocs/www/cms/classes/View/Viewhelper/Delegator.php(23): DI\Container->call(Array, Array) #5 /var/www/luebbering/htdocs/www/lib/twig/twig/src/Extension/CoreExtension.php(1544): Frootbox\View\Viewhelper\Delegator->__call('getReferences', Array) #6 /var/www/luebbering/htdocs/www/files/cache/views/49/49c72fece76af3928c70478fd00c63b3a61f3a94fcffcf062326d7ea2d6e208c.php(69): twig_get_attribute(Object(Twig\Environment), Object(Twig\Source), Object(Frootbox\View\Viewhelper\Delegator), 'getReferences', Array, 'method', false, false, false, 31) #7 /var/www/luebbering/htdocs/www/lib/twig/twig/src/Template.php(394): __TwigTemplate_f4c02f37bb7ecb58c951265336845bca6469e15f794986568f68e2d5db097be3->doDisplay(Array, Array) #8 /var/www/luebbering/htdocs/www/lib/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array) #9 /var/www/luebbering/htdocs/www/lib/twig/twig/src/Template.php(379): Twig\Template->display(Array) #10 /var/www/luebbering/htdocs/www/lib/twig/twig/src/TemplateWrapper.php(40): Twig\Template->render(Array, Array) #11 /var/www/luebbering/htdocs/www/lib/twig/twig/src/Environment.php(277): Twig\TemplateWrapper->render(Array) #12 /var/www/luebbering/htdocs/www/cms/classes/View/Engines/Twig.php(195): Twig\Environment->render('/var/www/luebbe...', Array) #13 /var/www/luebbering/htdocs/www/cms/classes/Persistence/AbstractPlugin.php(502): Frootbox\View\Engines\Twig->render('/var/www/luebbe...', Array) #14 [internal function]: Frootbox\Persistence\AbstractPlugin->renderHtml(Object(Frootbox\Config\Config), Object(Frootbox\View\Engines\Twig), 'index', Array) #15 /var/www/luebbering/htdocs/www/lib/php-di/invoker/src/Invoker.php(74): call_user_func_array(Array, Array) #16 /var/www/luebbering/htdocs/www/lib/php-di/php-di/src/Container.php(279): Invoker\Invoker->call(Array, Array) #17 /var/www/luebbering/htdocs/www/index.php(648): DI\Container->call(Array, Array) #18 {main} thrown in /var/www/luebbering/htdocs/www/cms/extensions/Core/Images/classes/Plugins/ReferencesTeaser/Plugin.php on line 26