r/www/html/vendor/magento/fram in /var/www/html/vendor/magento/framework/Code/Reader/ClassReader.php on line 24 code example

Example: Class Magento\Framework\App\ResourceConnection\Proxy does not exist

sudo chmod 777 -R .
sudo chown www-data: -R .
rm -rf var/cache/* var/page_cache/* var/generation/*
composer install