I was able to create a Wi-Fi hotspot on my Debian 8 install using the network tab under Gnome settings. I was trying to do the same using nmcli but when I do
$ nmcli con up id Hotspot
it always shows
Error: Connection activation failed.
I'm trying to connect to the connection created by Gnome itself.
$ nmcli connection show
Hotspot 6db9bb0a-c61b-47fc-8ada-7ecd46873fc0 802-11-wireless --
I followed the steps from here.