Warning: Undefined array key "frontend" in /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php on line 90
Fatal error: Uncaught TypeError: array_replace_recursive(): Argument #2 must be of type array, null given in /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php:90
Stack trace:
#0 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php(90): array_replace_recursive()
#1 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php(68): Magento\Framework\App\Cache\Frontend\Pool->_getCacheSettings()
#2 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php(156): Magento\Framework\App\Cache\Frontend\Pool->_initialize()
#3 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Type/FrontendPool.php(87): Magento\Framework\App\Cache\Frontend\Pool->get()
#4 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Type/Config.php(52): Magento\Framework\App\Cache\Type\FrontendPool->get()
#5 /var/www/clients/client1/web4/web/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(65): Magento\Framework\App\Cache\Type\Config->_getFrontend()
#6 /var/www/clients/client1/web4/web/vendor/magento/framework/App/ObjectManager/ConfigLoader.php(73): Magento\Framework\Cache\Frontend\Decorator\Bare->load()
#7 /var/www/clients/client1/web4/web/vendor/magento/framework/App/ObjectManager/Environment/Developer.php(79): Magento\Framework\App\ObjectManager\ConfigLoader->load()
#8 /var/www/clients/client1/web4/web/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Developer->configureObjectManager()
#9 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Bootstrap.php(212): Magento\Framework\App\ObjectManagerFactory->create()
#10 /var/www/clients/client1/web4/web/vendor/magento/framework/App/Bootstrap.php(127): Magento\Framework\App\Bootstrap->__construct()
#11 /var/www/clients/client1/web4/web/pub/index.php(27): Magento\Framework\App\Bootstrap::create()
#12 {main}
thrown in /var/www/clients/client1/web4/web/vendor/magento/framework/App/Cache/Frontend/Pool.php on line 90