Fatal error: Uncaught Exception: Notice: compact(): Undefined variable: extras in /var/www/clients/client2/web4/web/vendor/zendframework/zend-view/src/Helper/HeadLink.php on line 403 in /var/www/clients/client2/web4/web/vendor/magento/framework/App/ErrorHandler.php:61 Stack trace: #0 [internal function]: Magento\Framework\App\ErrorHandler->handler(8, 'compact(): Unde...', '/var/www/client...', 403, Array) #1 /var/www/clients/client2/web4/web/vendor/zendframework/zend-view/src/Helper/HeadLink.php(403): compact('rel', 'type', 'href', 'media', 'conditionalStyl...', 'extras') #2 /var/www/clients/client2/web4/web/vendor/zendframework/zend-view/src/Helper/HeadLink.php(168): Zend\View\Helper\HeadLink->createDataStylesheet(Array) #3 /var/www/clients/client2/web4/web/setup/view/layout/layout.phtml(18): Zend\View\Helper\HeadLink->__call('appendStyleshee...', Array) #4 /var/www/clients/client2/web4/web/vendor/zendframework/zend-view/src/Renderer/PhpRenderer.php(501): include('/var/www/client...') #5 /var/www/clients/client2/web4/web in /var/www/clients/client2/web4/web/vendor/magento/framework/App/ErrorHandler.php on line 61