process stuck

Hi,
I'm approaching to this tool, and I'm trying to configure it, but when I exec the command the process remains blocked also for empty subvolumes.

I'm running on Fedora 42, both tools installed via `dnf` and cloning repo from `git`.

I'm testing using two volumes on external devices mounted both on the same system and on two different system.

This is my conf file when the drives are mounted on two different system:
```
transaction_log /home/user/btrbk.log

snapshot_preserve no
target_preserve 24h 7d 4w 12m 5y

Backup data to remote host
volume /mnt/
subvolume subvol1
snapshot_dir .snapshot
target ssh://hostB/mnt/hostA
```

The results that I get is:
```
[send/receive] target: ssh://hpstB:/mnt/hostA/subvol1.20250915T2352
[send/receive] source: /mnt/.snapshot/subvol1.20250507T1738
```
And process is completely blocked.

What I'm wrong?