Wifi Hotspot doesn't work on older (PI3, ZeroW) Pi's

[edfardos]

I'm interested in discovering a single
hotspot.nmconnection file that works on all Pi hardware. Short of that, I'll work
on hardware detection and bring up an alternative hotspot configuration at boot
for the old Pi's.

The following three lines in bold make new Pi's hotspot work, but break old Pi's (3B, original ZeroW)

/etc/NetworkManager/system-connections/hotspot.nmconnection

[wifi-security]
group=ccmp
key-mgmt=wpa-psk
pairwise=ccmp
proto=rsn
psk=abcdefghij