Knot resolver warning: "/etc/resolv.conf.vpn.*: file not found"


When I reload kresd (/etc/init.d/kresd reload) I always get this warning: “/etc/resolv.conf.vpn.*: file not found”.
Why is knot resolver complaining about a vpn config file? BTW, kresd reloads despite the warning.
Sometimes I get DNS leaks when my openvpn client is running. Could this be related?
Any hint on the way forward?

Update: I resolved this issue by creating a symbolic link to my vpn provider configuration (resolv.conf.vpn.ExpressVPN)