Fatal error: Uncaught Zend_Cache_Exception: cache_dir "/var/www/html/var/page_cache" is not writable in /var/www/html/vendor/magento/zend-cache/library/Zend/Cache.php:209 Stack trace: #0 /var/www/html/vendor/magento/zend-cache/library/Zend/Cache/Backend/File.php(180): Zend_Cache::throwException('cache_dir "/var...') #1 /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php(86): Zend_Cache_Backend_File->setCacheDir('/var/www/html/v...') #2 /var/www/html/vendor/magento/zend-cache/library/Zend/Cache.php(153): Cm_Cache_Backend_File->__construct(Array) #3 /var/www/html/vendor/magento/zend-cache/library/Zend/Cache.php(94): Zend_Cache::_makeBackend('Cm_Cache_Backen...', Array, true, true) #4 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Factory.php(442): Zend_Cache::factory('Magento\\Framewo...', 'Cm_Cache_Backen...', Array, Array, true, true, true) #5 /var/www/html/vendor/magento/framework/Cache/Frontend/Adapter/Zend.php(38): Magento\Framework\App\Cache\Frontend\Factory->Magento\Framework\App\Cache\Frontend\{closure}() #6 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\Cache\Frontend\Adapter\Zend->__construct(Object(Closure)) #7 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #8 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...', Array) #9 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Factory.php(444): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Framewo...', Array) #10 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Factory.php(178): Magento\Framework\App\Cache\Frontend\Factory->createCacheWithDefaultOptions(Array) #11 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(69): Magento\Framework\App\Cache\Frontend\Factory->create(Array) #12 /var/www/html/vendor/magento/framework/App/Cache/Frontend/Pool.php(156): Magento\Framework\App\Cache\Frontend\Pool->_initialize() #13 /var/www/html/vendor/magento/framework/App/Cache/Type/FrontendPool.php(87): Magento\Framework\App\Cache\Frontend\Pool->get('default') #14 /var/www/html/vendor/magento/framework/App/Cache/Type/Config.php(52): Magento\Framework\App\Cache\Type\FrontendPool->get('config') #15 /var/www/html/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(65): Magento\Framework\App\Cache\Type\Config->_getFrontend() #16 /var/www/html/vendor/magento/framework/Interception/Config/CacheManager.php(68): Magento\Framework\Cache\Frontend\Decorator\Bare->load('interception') #17 /var/www/html/vendor/magento/framework/Interception/Config/Config.php(118): Magento\Framework\Interception\Config\CacheManager->load('interception') #18 /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\Interception\Config\Config->__construct(Object(Magento\Framework\ObjectManager\Config\Reader\Dom\Proxy), Object(Magento\Framework\Config\Scope), Object(Magento\Framework\App\Cache\Type\Config), Object(Magento\Framework\ObjectManager\Relations\Runtime), Object(Magento\Framework\Interception\ObjectManager\Config\Compiled), Object(Magento\Framework\ObjectManager\Definition\Runtime), 'interception', NULL, NULL) #19 /var/www/html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #20 /var/www/html/vendor/magento/framework/ObjectManager/ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #21 /var/www/html/vendor/magento/framework/App/ObjectManager/Environment/Compiled.php(113): Magento\Framework\ObjectManager\ObjectManager->get('Magento\\Framewo...') #22 /var/www/html/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Compiled->configureObjectManager(Object(Magento\Framework\Interception\ObjectManager\Config\Compiled), Array) #23 /var/www/html/vendor/magento/framework/App/Bootstrap.php(212): Magento\Framework\App\ObjectManagerFactory->create(Array) #24 /var/www/html/vendor/magento/framework/App/Bootstrap.php(127): Magento\Framework\App\Bootstrap->__construct(Object(Magento\Framework\App\ObjectManagerFactory), '/var/www/html', Array) #25 /var/www/html/pub/index.php(28): Magento\Framework\App\Bootstrap::create('/var/www/html', Array) #26 {main} thrown in /var/www/html/vendor/magento/zend-cache/library/Zend/Cache.php on line 209