Pls see the 2nd floor command. Thanks.
Modified: After Installed, Pls run the code as below by SSH:
php -f bin/magento setup:static-content:deploy
php -f bin/magento cache:flush
find . -type d -exec chmod 755 {} \; && find . -type f -exec chmod 644 {} \;
It is ok now.
Thank you. This fixed my issue.