Why is NetworkManager in disconnected status?

Question

ubuntu

Tell me why when running nmcli

STATE         CONNECTIVITY  WIFI-HW  WIFI     WWAN-HW  WWAN
disconnected  unknown       enabled  enabled  enabled  enabled

At the same time, the NetworkManager.service service itself was successfully started. The only error in the log

network manager error failed to open.run/network/ifstate

Indeed, there is no such file.

drwxr-xr-x   6 root root 4096 Apr 12 10:22 ./
drwxr-xr-x 111 root root 4096 Apr 12 06:02 ../
drwxr-xr-x   2 root root 4096 Apr 11 14:34 if-down.d/
drwxr-xr-x   2 root root 4096 Apr 11 14:34 if-post-down.d/
drwxr-xr-x   2 root root 4096 Apr 11 14:34 if-pre-up.d/
drwxr-xr-x   2 root root 4096 Apr 11 14:34 if-up.d/

But on another machine, where the connected status does not have such a file either ...

As a result, when I start
nmcli connection show
I get nothing.