Fatal error: Uncaught UnexpectedValueException: The stream or file "/var/www/html//var/log/system.log" could not be opened: failed to open stream: Permission denied in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:107 Stack trace: #0 /var/www/html/vendor/magento/framework/Logger/Handler/Base.php(87): Monolog\Handler\StreamHandler->write(Array) #1 /var/www/html/vendor/magento/framework/Logger/Handler/System.php(59): Magento\Framework\Logger\Handler\Base->write(Array) #2 /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(39): Magento\Framework\Logger\Handler\System->write(Array) #3 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(344): Monolog\Handler\AbstractProcessingHandler->handle(Array) #4 /var/www/html/vendor/magento/framework/Logger/Monolog.php(48): Monolog\Logger->addRecord(500, 'Can't create di...', Array) #5 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(735): Magento\Framework\Logger\Monolog->addRecord(500, 'Can't create di.. in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php on line 107