[1.12.2-1.0.5] Unexpected error: NullPointerException

[judgekreep]

I got this error 2 days ago and forgot to report it.
I don't recall what I was doing but hopefully the crash report says enough.

Description: Unexpected error

java.lang.NullPointerException
    at meldexun.reachfix.hook.client.EntityRendererHook.getMouseOver(EntityRendererHook.java:53)
    at net.minecraft.client.renderer.EntityRenderer.getMouseOver(EntityRenderer.java)
    at net.minecraft.client.renderer.EntityRenderer.renderWorld(EntityRenderer.java:1597)
    at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(EntityRenderer.java:1390)
    at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1119)
    at net.minecraft.client.Minecraft.run(Minecraft.java:3942)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Full crash report: https://pastebin.com/mCdWu7Nf

[Meldexun]

I don't know what could cause a NPE here. So unless you can somehow reproduce this I can't do anything here.

[Meldexun]

Is this reproducible or did this happen more than once?