Zend_Cache_Exception: cache_dir "/var/www/magento/var/cache/" is not writable in /var/www/magento/vendor/magento/zendframework1/library/Zend/Cache.php:209
Stack trace:
#0 /var/www/magento/vendor/magento/zendframework1/library/Zend/Cache/Backend/File.php(180): Zend_Cache::throwException('cache_dir "/var...')
#1 /var/www/magento/vendor/colinmollenhour/cache-backend-file/File.php(87): Zend_Cache_Backend_File->setCacheDir('/var/www/magent...')
#2 /var/www/magento/vendor/magento/zendframework1/library/Zend/Cache.php(153): Cm_Cache_Backend_File->__construct(Array)
#3 /var/www/magento/vendor/magento/zendframework1/library/Zend/Cache.php(94): Zend_Cache::_makeBackend('Cm_Cache_Backen...', Array, true, true)
#4 /var/www/magento/vendor/magento/framework/App/Cache/Frontend/Factory.php(156): Zend_Cache::factory('Magento\\Framewo...', 'Cm_Cache_Backen...', Array, Array, true, true, true)
#5 /var/www/magento/vendor/magento/framework/Cache/Frontend/Adapter/Zend.php(38): Magento\Framework\App\Cache\Frontend\Factory->Magento\Framework\App\Cache\Frontend\{closure}()
#6 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(121): Magento\Framework\Cache\Frontend\Adapter\Zend->__construct(Object(Closure))
#7 /var/www/magento/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(66): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array)
#8 /var/www/magento/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\\Framewo...', Array)
#9 /var/www/magento/vendor/magento/framework/App/Cache/Frontend/Factory.php(158): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Framewo...', Array)
#10 /var/www/magento/vendor/magento/framework/App/Cache/Frontend/Pool.php(69): Magento\Framework\App\Cache\Frontend\Factory->create(Array)
#11 /var/www/magento/vendor/magento/framework/App/Cache/Frontend/Pool.php(151): Magento\Framework\App\Cache\Frontend\Pool->_initialize()
#12 /var/www/magento/vendor/magento/framework/App/Cache/Type/FrontendPool.php(87): Magento\Framework\App\Cache\Frontend\Pool->get('default')
#13 /var/www/magento/vendor/magento/framework/App/Cache/Type/Config.php(49): Magento\Framework\App\Cache\Type\FrontendPool->get('config')
#14 /var/www/magento/vendor/magento/framework/Cache/Frontend/Decorator/Bare.php(65): Magento\Framework\App\Cache\Type\Config->_getFrontend()
#15 /var/www/magento/vendor/magento/framework/App/ObjectManager/ConfigLoader.php(73): Magento\Framework\Cache\Frontend\Decorator\Bare->load('global::DiConfi...')
#16 /var/www/magento/vendor/magento/framework/App/ObjectManager/Environment/Developer.php(79): Magento\Framework\App\ObjectManager\ConfigLoader->load('global')
#17 /var/www/magento/vendor/magento/framework/App/ObjectManagerFactory.php(191): Magento\Framework\App\ObjectManager\Environment\Developer->configureObjectManager(Object(Magento\Framework\Interception\ObjectManager\Config\Developer), Array)
#18 /var/www/magento/pub/errors/processorFactory.php(24): Magento\Framework\App\ObjectManagerFactory->create(Array)
#19 /var/www/magento/pub/errors/503.php(10): Magento\Framework\Error\ProcessorFactory->createProcessor()
#20 /var/www/magento/vendor/magento/framework/App/ExceptionHandler.php(172): require('/var/www/magent...')
#21 /var/www/magento/vendor/magento/framework/App/ExceptionHandler.php(71): Magento\Framework\App\ExceptionHandler->handleBootstrapErrors(Object(Magento\Framework\App\Bootstrap), Object(Exception), Object(Magento\Framework\App\Response\Http\Interceptor))
#22 /var/www/magento/vendor/magento/framework/App/Http.php(156): Magento\Framework\App\ExceptionHandler->handle(Object(Magento\Framework\App\Bootstrap), Object(Exception), Object(Magento\Framework\App\Response\Http\Interceptor), Object(Magento\Framework\App\Request\Http))
#23 /var/www/magento/vendor/magento/framework/App/Bootstrap.php(269): Magento\Framework\App\Http->catchException(Object(Magento\Framework\App\Bootstrap), Object(Exception))
#24 /var/www/magento/pub/index.php(40): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http))
#25 {main}