Hi,Looking at the error message, it is a browser issue because I have also just checked on my horizon env. for the master branch.It is working fine. Clear your cache and cookies for your browser or perform a hard refresh for your browser and then try.Thanks & regards,Vishal ManchandaOn Thu, Jan 12, 2023 at 7:56 PM Nguyễn Hữu Khôi <nguyenhuukhoinw@gmail.com> wrote:Hello guys.I use Openstack Xena which deployed by Kolla Ansible.My problem is when I launch instance from Horizon, Port selection won't show as below pictures:I try to change browser but this problem still persistsAny suggestions for me?Thank you. Regards.Nguyen Huu Khoi