Your ROOT_URL in app.ini is http://159.89.207.79:3000/ but you are visiting http://9.cron.my.id:3000/tribikram/ET-VISA/src/commit/c08a99aaa63a36da5587a58ad5a105320b3abbef/public/admin/plugins/flag-icon-css
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Mahesh Sharma