Wyng for Noobs

I cannot create an ssh backup. Are there settings in sshd or firewall (I blocked everything but tcp and the ip) that need to be set?
Normal ssh connections work, creating it without the wrapper also does not work

sudo wyng-util-qubes create --dest=qubes-ssh://wyng:user@1.1.1.1:200/mnt
Wyng-util-qubes v0.9 beta rel 20251105
Wyng 0.8.0 release 20251201

XXXXXXXXX)'.
mkdir -p -m 777 /tmp/wyngrpc/  && tdir=$(mktemp -d /tmp/wyngrpc/tmpXXXXXXXXXXXX)  && echo && echo $tdir && cat >$tdir/dest_helper.py
                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
[0, 127]


StorageError: Destination not ready to receive commands.