D-Bus failure: Variant type does not match during "Error: Deleting access point connection profile failed"

[theronic]

When I run sudo wifi-connect on a Raspberry Pi Zero, I get this error:

Error: Deleting access point connection profile failed
caused by: D-Bus failure: Variant type does not match: Variant(Iter(UInt32))

I was previously using comitup, which is a nightmare, so I ran sudo apt-get remove comitup, then installed wifi-connect. Is it because I had network-manager installed before and some services weren't configured?