This article gives you a comprehensive understanding of Java object serialization and deserialization>>>

First, record an error

[root@vpn-server wireguard]# wg-quick up wg0
[#] ip link add wg0 type wireguard
RTNETLINK answers: Operation not supported
Unable to access interface: Protocol not supported
[#] ip link delete dev wg0
Cannot find device "wg0"

At this point, pay attention to update the kernel and restart