Forge version: forge-1.16.2-33.0.37
Twilight Forest version: twilightforest-1.16.2-4.0.214-universal
Optifine version: Optifine 1.16.2 HD U G3

NOTE: This is most likely a bug on Optifine's end, however I felt the bug report should still be here as well since the crash seems to only happen with the Twilight Forest (all other mods I've tested work with Optifine).

Launcher Crash Message:
The game crashed whilst unexpected error
Error: java.lang.IllegalArgumentException: (256, 0) outside of image bounds (256, 8192)
Exit Code: -1

Full Crash Log:
---- Minecraft Crash Report ----
// Shall we play a game?

Time: 9/4/20 1:01 AM
Description: Unexpected error

java.lang.IllegalArgumentException: (256, 0) outside of image bounds (256, 8192)
at net.minecraft.client.renderer.texture.NativeImage.func_195709_a(NativeImage.java:261) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.func_229259_a_(TextureAtlasSprite.java:643) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.func_229257_a_(TextureAtlasSprite.java:628) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.access$600(TextureAtlasSprite.java:589) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.TextureAtlasSprite.func_94219_l(TextureAtlasSprite.java:498) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.AtlasTexture.func_94248_c(AtlasTexture.java:523) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.AtlasTexture.func_110550_d(AtlasTexture.java:639) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.renderer.texture.TextureManager.func_110550_d(TextureManager.java:214) ~[?:?] {re:classloading,xf:OptiFine:default}
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1408) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:930) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:584) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(Main.java:184) [?:?] {re:classloading,pl:runtimedistcleaner:A}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.2-33.0.37.jar:33.0] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$423/521466380.call(Unknown Source) [forge-1.16.2-33.0.37.jar:33.0] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-6.1.1.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-6.1.1.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-6.1.1.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-6.1.1.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-6.1.1.jar:?] {}

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Stacktrace:
at net.minecraft.client.renderer.texture.NativeImage.func_195709_a(NativeImage.java:261)
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.func_229259_a_(TextureAtlasSprite.java:643)
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.func_229257_a_(TextureAtlasSprite.java:628)
at net.minecraft.client.renderer.texture.TextureAtlasSprite$InterpolationData.access$600(TextureAtlasSprite.java:589)
at net.minecraft.client.renderer.texture.TextureAtlasSprite.func_94219_l(TextureAtlasSprite.java:498)
at net.minecraft.client.renderer.texture.AtlasTexture.func_94248_c(AtlasTexture.java:523)
at net.minecraft.client.renderer.texture.AtlasTexture.func_110550_d(AtlasTexture.java:639)
at net.minecraft.client.renderer.texture.TextureManager.func_110550_d(TextureManager.java:214)

-- Affected level --
Details:
All players: 1 total; [ClientPlayerEntity['SeaOfPixels'/224, l='ClientLevel', x=-793.65, y=48.00, z=-92.35]]
Chunk stats: Client Chunk Cache: 625, 122
Level dimension: twilightforest:twilightforest
Level spawn location: World: (-237,74,28), Chunk: (at 3,4,12 in -15,1; contains blocks -240,0,16 to -225,255,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 60036 game time, 60036 day time
Server brand: forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.world.ClientWorld.func_72914_a(ClientWorld.java:617)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:1974)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:605)
at net.minecraft.client.main.Main.main(Main.java:184)
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.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$423/521466380.call(Unknown Source)
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

-- System Details --
Details:
Minecraft Version: 1.16.2
Minecraft Version ID: 1.16.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1991878704 bytes (1899 MB) / 3288334336 bytes (3136 MB) up to 4294967296 bytes (4096 MB)
CPUs: 12
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 6.1.1+74+master.966c698
ModLauncher launch target: fmlclient
ModLauncher naming: srg
ModLauncher services:
/mixin-0.8.jar mixin PLUGINSERVICE
/eventbus-3.0.3-service.jar eventbus PLUGINSERVICE
/forge-1.16.2-33.0.37.jar object_holder_definalize PLUGINSERVICE
/forge-1.16.2-33.0.37.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-2.2.0-shadowed.jar accesstransformer PLUGINSERVICE
/forge-1.16.2-33.0.37.jar capability_inject_definalize PLUGINSERVICE
/forge-1.16.2-33.0.37.jar runtimedistcleaner PLUGINSERVICE
/mixin-0.8.jar mixin TRANSFORMATIONSERVICE
/OptiFine_1.16.2_HD_U_G3.jar OptiFine TRANSFORMATIONSERVICE
/forge-1.16.2-33.0.37.jar fml TRANSFORMATIONSERVICE
FML: 33.0
Forge: net.minecraftforge:33.0.37
FML Language Providers:
[email protected]
minecraft@1
Mod List:
forge-1.16.2-33.0.37-client.jar Minecraft {[email protected] DONE}
forge-1.16.2-33.0.37-universal.jar Forge {[email protected] DONE}
twilightforest-1.16.2-4.0.214-universal.jar The Twilight Forest {twilightforest@NONE DONE}
Launched Version: 1.16.2-forge-33.0.37
Backend library: LWJGL version 3.2.2 build 10
Backend API: Intel(R) UHD Graphics 630 GL version 4.6.0 - Build 27.20.100.8190, Intel
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'forge'
Type: Client (map_client.txt)
Graphics mode: fancy
Resource Packs: mod_resources (incompatible), vanilla, file/NewDefault+v1.34[MC1.16.2+].zip, file/MinecraftDungeonsSounds[MC1.16.2+].zip
Current Language: English (US)
CPU: 12x Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
OptiFine Version: OptiFine_1.16.2_HD_U_G3
OptiFine Build: 20200829-104659
Render Distance Chunks: 10
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.0 - Build 27.20.100.8190
OpenGlRenderer: Intel(R) UHD Graphics 630
OpenGlVendor: Intel
CpuCount: 12

You haven't attached any crash reports here...

Closing as this is an Optifine problem.