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/4201b17cab22711bd7eda2a3b6e9086d8d03068f/public/admin/plugins/jquery-knob
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Mahesh Sharma