Easy Question From Newbie

[beno -]

Hi;
What does this error mean?

server167# pfctl -f /etc/pf.conf
pfctl: /dev/pf: No such file or directory

All the "pfctl" files I have are binaries, so of course I can't study them. There's no reference to "dev" in my pf.conf file. What do I do to satisfy this error?
TIA,
beno3
 		
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