Sudden modded error after normal play

[KeazerAlex]

Hello, i've had this happen today with the appleskin mod particularly, i had been able to play without any major issues, however when i attempted to launch today, i keep getting the following error:

"AppleSkin (appleskin) has failed to load correctly

java.lang.reflect.InvocationTargetException: null"

Here's a paste of the crash report

And here's a paste of the latest log

to be noted, my game has been extremely laggy and crashing quite often (although i assume its because of the mods, which are many, despite them being mostly QoL stuff) 

any help would be welcome, thank you very much!