Fatal error: Uncaught ReflectionException: Class Magento\Framework\App\ResourceConnection\Proxy does not exist in

解决办法：

 sudo chown -R :www .
sudo find . -type d -exec chmod 770 {} + && find . -type f -exec chmod 660 {} + && chmod u+x bin/magento
 sudo find . -type d -exec chmod 770 {} + && sudo find . -type f -exec chmod 660 {} + && sudo chmod u+x bin/magento