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/19ee0065fb2b2061e1382bd7a9cb1ac355dfc672/public/admin/plugins/flag-icon-css/flags
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Mahesh Sharma