Can't install on Debian 10 Buster. Problem with 'hook'

Hi, on fresh Debian 10 'Buster' (KDE), I can't install Riseup-VPN, I have the next message when type sudo snap install --classic riseup-vpn:

- Run install hook of "riseup-vpn" snap if present (run hook "install": 
-----
/snap/riseup-vpn/152/meta/hooks/install:14: DeprecationWarning: decodestring() is a deprecated alias since Python 3.1, use decodebytes()
  lines = decode(POLKIT).split(b"\n")
Traceback (most recent call last):
  File "/snap/riseup-vpn/152/meta/hooks/install", line 25, in <module>
    os.symlink("/snap/riseup-vpn/current/snap/meta/gui/riseup-vpn.desktop", desktop_path)
FileExistsError: [Errno 17] File exists: '/snap/riseup-vpn/current/snap/meta/gui/riseup-vpn.desktop' -> '/usr/share/applications/riseup-vpn.desktop'
-----)

My snap list:

Name    Version    Rev   Tracking  Publisher   Notes
core    16-2.39.3  7270  stable    canonical✓  core
core18  20190709   1066  stable    canonical✓  base