Crash report:
`---- Minecraft Crash Report ----

WARNING: coremods are present:
FMLLoadingPlugin (AutoGG-4.0.3 (1.8.9).jar)
FMLLoadingPlugin (Scrollable Tooltips-1.3 (1.8.9).jar)
TNTTimerTweaker (TNT Time-1.0 (1.8.9).jar)
CorePlugin (SmoothFont-1.8.9-1.15.2.jar)
FMLLoadingPlugin (Compact Chat-1.3 (1.8.9).jar)
PatcherTweaker (Patcher-1.5.1 (1.8.9).jar)
FMLLoadingPlugin (OofMod-3.0 (1.8.9).jar)
FMLLoadingPlugin (MemoryFix-0.3.jar)
SkyblockAddonsLoadingPlugin (SkyblockAddons-1.6.0-for-MC-1.8.9.jar)
LoadingPlugin (Block_Overlay_4.0.3.jar)
FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)
ModTweaker (Patcher-1.5.1 (1.8.9).jar)
ItemPatchingLoader (ItemPhysic+Lite+1.3+mc1.8.9.jar)
Contact their authors BEFORE contacting forge

// Surprise! Haha. Well, this is awkward.

Time: 21.3.10 10:10
Description: Initializing game

java.lang.NoClassDefFoundError: club/sk1er/patcher/hooks/FontRendererHook
at net.minecraft.client.gui.FontRenderer.(FontRenderer.java:168)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:427)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
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.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at net.minecraft.client.gui.FontRenderer.(FontRenderer.java:168)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:427)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
at net.minecraft.client.main.Main.main(SourceFile:124)
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.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8.9
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: 385771248 bytes (367 MB) / 973078528 bytes (928 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.19 Powered by Forge 11.15.1.2318 Optifine OptiFine_1.8.9_HD_U_M5 36 mods loaded, 36 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
U mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
U FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
U Forge{11.15.1.2318} [Minecraft Forge] (forge-1.8.9-11.15.1.2318-1.8.9.jar)
U itemphysic{1.3.0} [ItemPhysic] (minecraft.jar)
U refractionoof{3.0} [Oof Mod] (minecraft.jar)
U smoothfontcore{1.8.9-1.15.1} [Smooth Font Core] (minecraft.jar)
U autotip{3.0.1} [Autotip] (Autotip-3.0.1 [1.8-1.12.2].jar)
U nick_hider{5.3.1} [Nick Hider] (Nick Hider-5.3.1 (1.8.9).jar)
U replaymod{1.8.9-2.5.2} [Replay Mod] (replaymod-1.8.9-2.5.2.jar)
U modcore{0.1.47} [ModCore] (Sk1er Modcore-0.1.47 (1.8.9).jar)
U pownspotionhud{1.0} [pownspotionhud] (1.8.9_Powns_PotionEffect_HUD_-_1.0.jar)
U Powns ArmorStatus HUD{1.0} [powns-armorhud] ([1.8.9] Powns ArmorStatus HUD - 1.1.jar)
U pownscoordshud{1.0} [Powns' Coords HUD] ([1.8.9] Powns Coords HUD - 1.0.jar)
U bspkrscore{1.8.9.2} [bspkrsCore] ([1.8.9]bspkrsCore-universal-1.8.9.2.jar)
U sidebarmod{1.01} [SidebarMod] ([1.8.9]SidebarMod-1.01.jar)
U autogg{4.0.3} [AutoGG] (AutoGG-4.0.3 (1.8.9).jar)
U blockoverlay{4.0.3} [Block Overlay] (Block_Overlay_4.0.3.jar)
U compactchat{1.3} [Compact Chat] (Compact Chat-1.3 (1.8.9).jar)
U DiscordRP{1.2.4} [DiscordRP] (DiscordRP-1.2.4.jar)
U dungeonrooms{3.2.4} [Dungeon Rooms Mod] (Dungeon_Rooms-3.2.4.jar)
U hystats{2.0} [HyStats] (HyStats-v2.0 (1.8.9).jar)
U keystrokesmod{8.0.2} [KeystrokesMod] (Keystrokes-8.0.2 (1.8.9).jar)
U memoryfix{0.3} [MemoryFix] (MemoryFix-0.3.jar)
U notenoughupdates{2.0.0-REL} [NotEnoughUpdates] (NotEnoughUpdates-2.0-PRE30.2.jar)
U patcher{1.5.1} [Patcher] (Patcher-1.5.1 (1.8.9).jar)
U quickplay{2.0.7} [Quickplay] (Quickplay-1.8.9-2.0.7.jar)
U resourcepackmanager{1.0} [Resource Pack Manager] (Resource_Pack_Manager_1.1.jar)
U text_overflow_scroll{1.3} [Scrollable Tooltips] (Scrollable Tooltips-1.3 (1.8.9).jar)
U skyblockaddons{1.6.0} [SkyblockAddons] (SkyblockAddons-1.6.0-for-MC-1.8.9.jar)
U skyblockcatia{1.3.2} [SkyBlockcatia] (SkyBlockcatia-1.8.9-1.3.2.jar)
U SkyblockExtras{2.1.7.1} [SkyblockExtras] (SkyblockExtras-2.1.7.1.jar)
U skyblockhud{1.13} [Skyblock Hud] (SkyblockHud-1.13-beta7.jar)
U smoothfont{1.8.9-1.15.2} [Smooth Font] (SmoothFont-1.8.9-1.15.2.jar)
U timechanger{2.1} [TimeChanger] (TimeChanger-2.2.1.jar)
U tnttime{1.0} [TNT Time] (TNT Time-1.0 (1.8.9).jar)
U sk1er_fullscreen{1.0} [Sk1er Fullscreen] (Windowed Fullscreen-1.0 (1.8.9).jar)
Loaded coremods (and transformers):
FMLLoadingPlugin (AutoGG-4.0.3 (1.8.9).jar)
club.sk1er.mods.core.forge.ClassTransformer
FMLLoadingPlugin (Scrollable Tooltips-1.3 (1.8.9).jar)
club.sk1er.mods.overflowscroll.forge.ClassTransformer
TNTTimerTweaker (TNT Time-1.0 (1.8.9).jar)
club.sk1er.mods.tnttimer.tweaker.ClassTransformer
CorePlugin (SmoothFont-1.8.9-1.15.2.jar)
bre.smoothfont.asm.Transformer
FMLLoadingPlugin (Compact Chat-1.3 (1.8.9).jar)
club.sk1er.mods.core.forge.ClassTransformer
PatcherTweaker (Patcher-1.5.1 (1.8.9).jar)
club.sk1er.mods.core.forge.ClassTransformer
club.sk1er.patcher.tweaker.ClassTransformer
FMLLoadingPlugin (OofMod-3.0 (1.8.9).jar)
us.nickfraction.oofmod.asm.EntityPlayerTransformer
us.nickfraction.oofmod.asm.EntityArrowTransformer
us.nickfraction.oofmod.asm.EntityFishHookTransformer
us.nickfraction.oofmod.asm.RenderGlobalTransformer
FMLLoadingPlugin (MemoryFix-0.3.jar)
io.prplz.memoryfix.ClassTransformer
SkyblockAddonsLoadingPlugin (SkyblockAddons-1.6.0-for-MC-1.8.9.jar)
codes.biscuit.skyblockaddons.tweaker.SkyblockAddonsTransformer
LoadingPlugin (Block_Overlay_4.0.3.jar)
me.aycy.blockoverlay.asm.Transformer
FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)

ModTweaker (Patcher-1.5.1 (1.8.9).jar)
club.sk1er.patcher.tweaker.other.ModClassTransformer
ItemPatchingLoader (ItemPhysic+Lite+1.3+mc1.8.9.jar)
com.creativemd.itemphysic.ItemTransformer
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 457.49' Renderer: 'GeForce GTX 1650/PCIe/SSE2'
Launched Version: 1.8.9-forge1.8.9-11.15.1.2318-1.8.9
LWJGL: 2.9.4
OpenGL: GeForce GTX 1650/PCIe/SSE2 GL version 4.6.0 NVIDIA 457.49, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: !  §f#§8Deep §bSky v2 §fRevamp.zip
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i5-9300HF CPU @ 2.40GHz
OptiFine Version: OptiFine_1.8.9_HD_U_M5
OptiFine Build: 20210124-163719
Render Distance Chunks: 6
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.0 NVIDIA 457.49
OpenGlRenderer: GeForce GTX 1650/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 8`

Update Patcher to 1.6.