I cannot get any mods to work at all as i have never done this before. I am trying to install a player tracker mod for 1.14.4 and i have the latest forge version for 1.14.4. I have put the .jar file in the mods folder in .minecraft but when loading the game it says that the file is not valid. I am pretty sure that it is as i got it from curseforge. If anyone could be of assistance in getting this to work that would be great.
The mod: https://www.curseforge.com/minecraft/mc-mods/player-tracking