root@VM-0-10-ubuntu:~# sudo chown www-data:www-data /var/www/models
curl -X POST -H "Authorization: Bearer SHEINGMCC" -F "file=@/etc/hostname" http://localhost/upload
{"success":true,"url":"http://122.152.219.181/models/4710c754e0184e9bb0b7466382f242e2.jpg"}