The Player API is a great add-on that you need to install other modifications. Basically it contains libraries that contain the necessary scripts that will be required if Modloader and Minecraft forge need to install modifiers.
You can also pay attention to the fact that some of the author’s Addons give errors if it is not installed.
How to install Player API
- Download and install Minecraft Forge
- Download mod
- Unzip it and copy to C:\Users\User_Name\AppData\ Roaming\.minecraft\mods