Warning: file_put_contents(/var/www/html/var/cache//mage-tags/mage---6c3_CONFIG): failed to open stream: Permission denied in /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php on line 691

Warning: file_put_contents(/var/www/html/var/cache//mage-tags/mage---6c3_MAGE): failed to open stream: Permission denied in /var/www/html/vendor/colinmollenhour/cache-backend-file/File.php on line 691
UnexpectedValueException: The stream or file "/var/www/html//var/log/debug.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:110 Stack trace: #0 /var/www/html/vendor/magento/framework/Logger/Handler/Base.php(88): Monolog\Handler\StreamHandler->write(Array) #1 /var/www/html/vendor/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php(39): Magento\Framework\Logger\Handler\Base->write(Array) #2 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(344): Monolog\Handler\AbstractProcessingHandler->handle(Array) #3 /var/www/html/vendor/magento/framework/Logger/Monolog.php(48): Monolog\Logger->addRecord(400, 'Class Magento\\B...', Array) #4 /var/www/html/vendor/monolog/monolog/src/Monolog/Logger.php(712): Magento\Framework\Logger\Monolog->addRecord(400, 'Class Magento\\B...', Array) #5 /var/www/html/vendor/magento/framework/Logger/LoggerProxy.php(126): Monolog\Logger->error('Class Magento\\B...', Array) #6 /var/www/html/vendor/magento/framework/App/Bootstrap.php(268): Magento\Framework\Logger\LoggerProxy->error('Class Magento\\B...') #7 /var/www/html/pub/index.php(27): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #8 {main}