This project is abandoned and its default file will likely not work with the most recent version of Minecraft. Whether this project is out of date or its author has marked it as abandoned, this project is no longer maintained.
Hey, and welcome on the DEV.Bukkit page of CheckLagg. CheckLagg is an easy plugin, to quick check, of your server has any lagg. If your server has lagg, you can use the /fixlagg command to get some tips to fix the lagg! Hopefully you like the plugin.