FIPS-CC and enabling ports | 71F

Question: FIPS-CC is enabled. The interface is up. Why can’t I set allowaccess to permit https on port 1 for GUI access? 

The Background: 

I don’t have any FortiOS experience. I’ve been given a 71F to configure. The documentation describes enabling FIPS-CC, setting a new administrator password, and enabling the ports via 

config system interface

edit internal1

set status up

end

followed by changing the allowaccess attributes to add https via set or append

set allowaccess ping https

Neither append nor set allow me to do so, and set ? doesn’t list allowaccess as an option. the internal1 (port1) was part of a virtual switch. i’ve since removed it: 

config system virtual-switch

edit “internal”

config port

delete internal1

end

a ‘show’ command after each ‘end’ reflects that the configurations were accepted - internal1 is up and removed from the virtual-switch. if i `show full-configuration system interface | grep -f internal1’, i get the following attributes. 

config system interface
    edit "internal1" <---
        set vdom "root"
        set dhcp-classless-route-addition disable
        set status up
        set type physical
        set trunk disable
        set description ''
        set alias ''
        set ike-saml-server ''
        set role undefined
        set snmp-index 4
        set eap-supplicant disable
        set speed auto
    next
end
 

What am I missing to permit allowaccess?