Error: the game crashed whilst rendering entity in worlderror: java.lang.nullpointerexception: cannot invoke "online.kingdomkeys.kingdomkeys.capability.iplayercapabilities.getarmorcolor()" because "playerdata" is null

As soon as I died the screen froze and I got kicked with this error code. Upon reloading, it'll freeze once the first block starts rendering. I'm looking for a work around but I figured I'd report it.

crash-2023-11-04_13.49.39-client.txt