can't activate wifi hotspot (access point)

sudo nmcli c add type wifi ifname '*' con-name Hotspot autoconnect no ssid Hotspotssid
sudo nmcli connection modify Hotspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared
sudo nmcli connection modify Hotspot wifi-sec.key-mgmt wpa-psk
sudo nmcli connection modify Hotspot wifi-sec.psk "lepassword"
sudo nmcli connection up Hotspot

But after "sudo nmcli connection up Hotspot" I am getting "Error: Connection activation failed.". 

Any idea please?