Fatal error: Uncaught UnexpectedValueException: The stream or file "/var/www/html/logs/grav.log" could not be opened in append mode: Failed to open stream: Permission denied in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:115
Stack trace:
#0 /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(39): Monolog\Handler\StreamHandler->write()
#1 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(344): Monolog\Handler\AbstractProcessingHandler->handle()
#2 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(446): Monolog\Logger->addRecord()
#3 /var/www/html/system/src/Grav/Common/Plugins.php(323): Monolog\Logger->addWarning()
#4 /var/www/html/system/src/Grav/Common/Plugins.php(61): Grav\Common\Plugins->loadPlugin()
#5 /var/www/html/system/src/Grav/Common/Grav.php(738): Grav\Common\Plugins->__construct()
#6 /var/www/html/vendor/pimple/pimple/src/Pimple/Container.php(122): Grav\Common\Grav->Grav\Common\{closure}()
#7 /var/www/html/system/src/Grav/Common/Processors/InitializeProcessor.php(178): Pimple\Container->offsetGet()
#8 /var/www/html/system/src/Grav/Common/Processors/InitializeProcessor.php(73): Grav\Common\Processors\InitializeProcessor->initializeConfig()
#9 /var/www/html/system/src/Grav/Framework/RequestHandler/Traits/RequestHandlerTrait.php(50): Grav\Common\Processors\InitializeProcessor->process()
#10 /var/www/html/system/src/Grav/Framework/RequestHandler/Traits/RequestHandlerTrait.php(62): Grav\Framework\RequestHandler\RequestHandler->handle()
#11 /var/www/html/system/src/Grav/Framework/RequestHandler/Middlewares/MultipartRequestSupport.php(40): Grav\Framework\RequestHandler\RequestHandler->handle()
#12 /var/www/html/system/src/Grav/Framework/RequestHandler/Traits/RequestHandlerTrait.php(50): Grav\Framework\RequestHandler\Middlewares\MultipartRequestSupport->process()
#13 /var/www/html/system/src/Grav/Framework/RequestHandler/Traits/RequestHandlerTrait.php(62): Grav\Framework\RequestHandler\RequestHandler->handle()
#14 /var/www/html/system/src/Grav/Common/Grav.php(312): Grav\Framework\RequestHandler\RequestHandler->handle()
#15 /var/www/html/index.php(47): Grav\Common\Grav->process()
#16 {main}
thrown in /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php on line 115