Fatal error: Uncaught Symfony\Component\Filesystem\Exception\IOException: Failed to create "/var/www/html/var/cache/dev/translations": mkdir(): Permission denied in /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php:104 Stack trace: #0 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php(676): Symfony\Component\Filesystem\Filesystem->mkdir() #1 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Config/ResourceCheckerConfigCache.php(124): Symfony\Component\Filesystem\Filesystem->dumpFile() #2 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Translation/Translator.php(334): Symfony\Component\Config\ResourceCheckerConfigCache->write() #3 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Translation/Translator.php(299): Symfony\Component\Translation\Translator->dumpCatalogue() #4 /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Config/ConfigCacheFactory.php(46): Symfony\Component\Translation\Translator->Symfony\Component\Tra in /var/www/html/vendor/symfony/symfony/src/Symfony/Component/Filesystem/Filesystem.php on line 104