Fatal error: Uncaught exception 'UnexpectedValueException' with message 'The stream or file "/var/www/symfony/app/logs/prod.log" could not be opened: failed to open stream: Permission denied' in /var/www/symfony/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:107 Stack trace: #0 /var/www/symfony/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(37): Monolog\Handler\StreamHandler->write(Array) #1 /var/www/symfony/vendor/monolog/monolog/src/Monolog/Handler/FingersCrossedHandler.php(122): Monolog\Handler\AbstractProcessingHandler->handle(Array) #2 /var/www/symfony/vendor/monolog/monolog/src/Monolog/Logger.php(336): Monolog\Handler\FingersCrossedHandler->handle(Array) #3 /var/www/symfony/vendor/monolog/monolog/src/Monolog/Logger.php(643): Monolog\Logger->addRecord(500, 'Uncaught PHP Ex...', Array) #4 /var/www/symfony/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php(89): Monolog\Logger->critical('Uncaught PHP Ex...', Array) #5 /var/www/symfony/vendo in /var/www/symfony/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php on line 107