UnexpectedValueException: The stream or file "/var/www/html/pilot.m2//var/log/system.log" could not be opened in append mode: failed to open stream: Read-only file system in /var/www/html/pilot.m2/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:110 Stack trace: #0 /var/www/html/pilot.m2/vendor/magento/framework/Logger/Handler/Base.php(88): Monolog\Handler\StreamHandler->write() #1 /var/www/html/pilot.m2/vendor/magento/framework/Logger/Handler/System.php(62): Magento\Framework\Logger\Handler\Base->write() #2 /var/www/html/pilot.m2/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(39): Magento\Framework\Logger\Handler\System->write() #3 /var/www/html/pilot.m2/vendor/monolog/monolog/src/Monolog/Logger.php(344): Monolog\Handler\AbstractProcessingHandler->handle() #4 /var/www/html/pilot.m2/vendor/magento/framework/Logger/Monolog.php(48): Monolog\Logger->addRecord() #5 /var/www/html/pilot.m2/vendor/monolog/monolog/src/Monolog/Logger.php(712): Magento\Framework\Logger\Monolog->addRecord() #6 /var/www/html/pilot.m2/vendor/magento/framework/Logger/LoggerProxy.php(126): Monolog\Logger->error() #7 /var/www/html/pilot.m2/vendor/magento/framework/App/Bootstrap.php(268): Magento\Framework\Logger\LoggerProxy->error() #8 /var/www/html/pilot.m2/pub/index.php(29): Magento\Framework\App\Bootstrap->run() #9 {main}