Wireguardless (GUE/FOU) mode not working

[sunmast]

./wgslirpy -k INSECURE -K GUE -b 127.0.0.1:6556 --dns 10.0.2.1:53 -P 10.0.2.1
Error: could not convert slice to array

Tried on both Linux desktop (Debian/Fedora) and Android (Termux)

[vi]

Are you using the recent master (not pre-built) version?