Warning: Undefined array key "frontend" in /home/rangbazar/public_html/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 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Frontend/Pool.php:90 Stack trace: #0 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Frontend/Pool.php(90): array_replace_recursive(Array, NULL) #1 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Frontend/Pool.php(68): Magento\Framework\App\Cache\Frontend\Pool->_getCacheSettings() #2 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Frontend/Pool.php(156): Magento\Framework\App\Cache\Frontend\Pool->_initialize() #3 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Type/FrontendPool.php(87): Magento\Framework\App\Cache\Frontend\Pool->get('default') #4 /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Type/Config.php(52): Magento\Framework\App\Cache\Type\FrontendPool->get('config') #5 /home/rangbazar/public_html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(65): Magento\Framework\App\Cache\Type\Config->_getFrontend() #6 /home/rangbazar/public_html/vendor/magento/framework/App/ObjectManager/ConfigLoader.php(73): Magento\Framework\Cache\Frontend\Decorator\Bare->load('global::DiConfi...') #7 /home/rangbazar/public_html/vendor/magento/framework/App/ObjectManager/Environment/Developer.php(79): Magento\Framework\App\ObjectManager\ConfigLoader->load('global') #8 /home/rangbazar/public_html/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Developer->configureObjectManager(Object(Magento\Framework\Interception\ObjectManager\Config\Developer), Array) #9 /home/rangbazar/public_html/vendor/magento/framework/App/Bootstrap.php(212): Magento\Framework\App\ObjectManagerFactory->create(Array) #10 /home/rangbazar/public_html/vendor/magento/framework/App/Bootstrap.php(127): Magento\Framework\App\Bootstrap->__construct(Object(Magento\Framework\App\ObjectManagerFactory), '/home/rangbazar...', Array) #11 /home/rangbazar/public_html/pub/index.php(27): Magento\Framework\App\Bootstrap::create('/home/rangbazar...', Array) #12 {main} thrown in /home/rangbazar/public_html/vendor/magento/framework/App/Cache/Frontend/Pool.php on line 90