Synology DSM WireGuard problem

[Sillion 0]

I have installed WireGuard on my Synology. Does anyoe know if there is a way to connect? My configuration looks like this, but no connection is being established, and I am getting an error message.
 

Quote

[Interface]
PostUp = iptables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
PostUp = ip6tables -t nat -I POSTROUTING -o eth0 -j MASQUERADE
PreDown = iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
PreDown = ip6tables -t nat -D POSTROUTING -o eth0 -j MASQUERADE

Address = xxxxxxxx
PrivateKey = xxxxxxxx
MTU = 1320
DNS = xxxxxxxx, xxxxxxxx::x

[Peer]
PublicKey = xxxxxxxx
PresharedKey = xxxxxxxx
Endpoint = nl3.vpn.airdns.org:1637
AllowedIPs = 0.0.0.0/0,::/0
PersistentKeepalive = 15

error message

root@MYNAS:~# wg-quick up AirVPN_Netherlands
[#] ip link add AirVPN_Netherlands type wireguard
[#] wg setconf AirVPN_Netherlands /dev/fd/63
[#] ip -4 address add xxx.xxx.xxx.xx/xx dev AirVPN_Netherlands
[#] ip -6 address add xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx/xxx dev AirVPN_Netherlands
[#] ip link set mtu 1320 up dev AirVPN_Netherlands
[#] wg set AirVPN_Netherlands_UDP-1637-Entry3 fwmark 51820
[#] ip -6 route add ::/0 dev AirVPN_Netherlands table 51820
[#] ip -6 rule add not fwmark 51820 table 51820
[#] ip -6 rule add table main suppress_prefixlength 0
Error: argument "suppress_prefixlength" is wrong: Failed to parse rule type
[#] ip -6 rule delete table 51820
[#] ip link delete dev AirVPN_Netherlands

Edited ... by Sillion