error connecting to sec-mod socket

Hello,

I'm not sure this is new issue, I saw this one Binaries v1.2.3 are compiled on debian 10 and running on ununtu 18.04 While start there is error message

note: vhost:default: setting 'radius' as primary authentication method
note: setting 'radius' as accounting method
error connecting to sec-mod socket '/var/run/occtl.socket.273f0252': No such file or directorynote: setting 'radius' as supplemental config option

Actually there is no such file as /var/run/occtl.socket.273f0252 but there is such file as /var/run/occtl.socket.273f0252.0

ls -lA /var/run/occtl.socket.273f0252.0 
srwx--x--x 1 root root 0 Dec 21 14:58 /var/run/occtl.socket.273f0252.0

And this error connecting to sec-mod socket seems have no effect and vpn works. I found this error text in two places at sources and have no idea there is happens and why and how it can be fixed...