Thanks for updating optifabric to 1.16.3 btw!

I have no clue but randomly when I am playing survival with a couple of other mods installed I get a crash report with this text as follows:

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 9/19/20 8:10 PM
Description: Unexpected error

org.spongepowered.asm.mixin.injection.throwables.InjectionError: LVT in net/minecraft/class_338::method_1805(Lnet/minecraft/class_4587;I)V has incompatible changes at opcode 349 in callback net/minecraft/class_338::render.
Expected: [I, I, Z, D, I, D, D, D, D, I, I, Lnet/minecraft/class_303;, D, I, I, I, D]
Found: [I, I, I, Z, D, I, D, D, D, D, I, I, Lnet/minecraft/class_303;, I, D, I, I]
at net.minecraft.class_338.handler$zcn000$render$missing(class_338.java)
at net.minecraft.class_338.method_1805(class_338.java:116)
at net.minecraft.class_329.method_1753(class_329.java:420)
at net.minecraft.class_757.method_3192(class_757.java:765)
at net.minecraft.class_310.method_1523(class_310.java:1023)
at net.minecraft.class_310.method_1514(class_310.java:656)
at net.minecraft.client.main.Main.main(Main.java:215)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:192)
at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140)
at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)

This is only the first part of the crash report, if additional information is needed I am attaching the crash report file into this post.
crash-2020-09-19_20.10.16-client.txt

It will have been crashing whenever something was sent to the chat, as one of Chat-Head's Mixins was the cause of that crash.