Fatal error: Uncaught Symfony\Component\Filesystem\Exception\IOException: Cannot rename "/tmp/class_index.phpkC0ZGE" to "/var/www/html/var/cache/dev/class_index.php": rename(/tmp/class_index.phpkC0ZGE,/var/www/html/var/cache/dev/class_index.php): Permission denied in /var/www/html/vendor/symfony/filesystem/Filesystem.php:320 Stack trace: #0 /var/www/html/vendor/symfony/filesystem/Filesystem.php(699): Symfony\Component\Filesystem\Filesystem->rename() #1 /var/www/html/vendor/prestashop/autoload/src/LegacyClassLoader.php(160): Symfony\Component\Filesystem\Filesystem->dumpFile() #2 /var/www/html/vendor/prestashop/autoload/src/LegacyClassLoader.php(75): PrestaShop\Autoload\LegacyClassLoader->dumpClassIndex() #3 /var/www/html/vendor/prestashop/autoload/src/PrestashopAutoload.php(47): PrestaShop\Autoload\LegacyClassLoader->buildClassIndex() #4 /var/www/html/vendor/prestashop/autoload/src/PrestashopAutoload.php(38): PrestaShop\Autoload\PrestashopAutoload->generateIndex() #5 /var/www/html/vendor/prestashop/autoload/src/Autoloader.php(77): PrestaShop\Autoload\PrestashopAutoload->PrestaShop\Autoload\{closure}() #6 /var/www/html/config/config.inc.php(88): PrestaShop\Autoload\Autoloader->load() #7 /var/www/html/index.php(40): require_once('...') #8 {main} thrown in /var/www/html/vendor/symfony/filesystem/Filesystem.php on line 320