Is OS X El Capitan (10.11) and macOS Sierra (10.12) included in the operating environment of multipass?
With these versions, in my environment the multipass command issued an error and could not be started.
It seems that there is no problem in the version environment after macOS High Sierra (10.13).
The version of multipass I checked at this time is 1.0.0.
kurosawa-no-Mac:~ kurosawa$ multipass version
dyld: Symbol not found: __ZNSt19bad_optional_accessD1Ev
Referenced from: /usr/local/bin/multipass
Expected in: /usr/lib/libc++.1.dylib
in /usr/local/bin/multipass
Trace/BPT trap: 5
kurosawa-no-Mac:~ kurosawa$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.11.6
BuildVersion: 15G22010
kurosawanoMac:~ kurosawa$ multipass version
dyld: Symbol not found: __ZNSt19bad_optional_accessD1Ev
Referenced from: /usr/local/bin/multipass
Expected in: /usr/lib/libc++.1.dylib
in /usr/local/bin/multipass
Abort trap: 6
kurosawanoMac:~ kurosawa$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.12.6
BuildVersion: 16G2136
kurosawanomakku:~ kurosawa$ multipass version
multipass 1.0.0+mac
multipassd 1.0.0+mac
kurosawanomakku:~ kurosawa$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.13.6
BuildVersion: 17G66