what does this line in the code mean? keeps popping up

[xiiMaGzx]

Sat Sep  4 16:15:11 2021 daemon.err cli.lua[2887]: conntrack v1.4.5 (conntrack-tools): 0 flow entries have been deleted.

[Netduma Fraser]

Hey, welcome to the forum!

The log file is primarily for developers and shows entries like this which just shows normal background processes and is nothing to be concerned about.