keep getting a "rendering overlay" error when attempting to open pixelmon

[Joseph117]

Hello,

Everytime I try and open pixelmon via curseforge, i get the same error even though it seemingly worked just fine a few months ago when i last played it. 

The full crash report:

---- Minecraft Crash Report ----
// Why did you do that?

Time: 6/16/23 1:11 AM
Description: Rendering overlay

java.lang.NullPointerException: Rendering overlay
    at com.pixelmonmod.pixelmon.client.gui.override.main.MainMenuModifier.onPreRender(MainMenuModifier.java:39) ~[?:1.16.5-9.1.5] {re:classloading}
    at com.pixelmonmod.pixelmon.client.gui.override.MenuOverrideFactory.onGuiOpen(MenuOverrideFactory.java:46) ~[?:1.16.5-9.1.5] {re:classloading}
    at net.minecraftforge.eventbus.ASMEventHandler_131_MenuOverrideFactory_onGuiOpen_Post.invoke(.dynamic) ~[?:?] {}
    at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus$$Lambda$3189/833020098.invoke(Unknown Source) ~[?:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraft.client.gui.screen.Screen.func_231158_b_(Screen.java:327) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinScreen,pl:mixin:APP:fancymenu.general.mixin.json:MixinScreen,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_147108_a(Minecraft.java:853) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.lambda$null$1(Minecraft.java:514) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft$$Lambda$7556/1243880541.run(Unknown Source) ~[?:?] {}
    at net.minecraft.util.Util.func_215077_a(Util.java:320) ~[?:?] {re:classloading}
    at net.minecraft.client.Minecraft.lambda$new$2(Minecraft.java:504) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft$$Lambda$6409/187150717.accept(Unknown Source) ~[?:?] {}
    at net.minecraft.client.gui.ResourceLoadProgressGui.func_230430_a_(ResourceLoadProgressGui.java:113) ~[?:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:fancymenu.general.mixin.json:MixinResourceLoadProgressGui,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.renderer.GameRenderer.func_195458_a(GameRenderer.java:481) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:977) [?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) [?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:184) [?:?] {re:classloading,pl:runtimedistcleaner:A}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
    at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.34.jar:36.2] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$464/1367503763.call(Unknown Source) [forge-1.16.5-36.2.34.jar:36.2] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] {}

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

-- Head --
Thread: Render thread
Stacktrace:
    at com.pixelmonmod.pixelmon.client.gui.override.main.MainMenuModifier.onPreRender(MainMenuModifier.java:39) ~[?:1.16.5-9.1.5] {re:classloading}
    at com.pixelmonmod.pixelmon.client.gui.override.MenuOverrideFactory.onGuiOpen(MenuOverrideFactory.java:46) ~[?:1.16.5-9.1.5] {re:classloading}
    at net.minecraftforge.eventbus.ASMEventHandler_131_MenuOverrideFactory_onGuiOpen_Post.invoke(.dynamic) ~[?:?] {}
    at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus$$Lambda$3189/833020098.invoke(Unknown Source) ~[?:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-4.0.0.jar:?] {}
    at net.minecraft.client.gui.screen.Screen.func_231158_b_(Screen.java:327) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinScreen,pl:mixin:APP:fancymenu.general.mixin.json:MixinScreen,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_147108_a(Minecraft.java:853) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.lambda$null$1(Minecraft.java:514) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft$$Lambda$7556/1243880541.run(Unknown Source) ~[?:?] {}
    at net.minecraft.util.Util.func_215077_a(Util.java:320) ~[?:?] {re:classloading}
    at net.minecraft.client.Minecraft.lambda$new$2(Minecraft.java:504) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft$$Lambda$6409/187150717.accept(Unknown Source) ~[?:?] {}
    at net.minecraft.client.gui.ResourceLoadProgressGui.func_230430_a_(ResourceLoadProgressGui.java:113) ~[?:?] {re:mixin,pl:runtimedistcleaner:A,re:classloading,pl:mixin:APP:fancymenu.general.mixin.json:MixinResourceLoadProgressGui,pl:mixin:A,pl:runtimedistcleaner:A}
-- Overlay render details --
Details:
    Overlay name: net.minecraft.client.gui.ResourceLoadProgressGui
Stacktrace:
    at net.minecraft.client.renderer.GameRenderer.func_195458_a(GameRenderer.java:481) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:977) [?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) [?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:fancymenu.general.mixin.json:IMixinMinecraft,pl:mixin:APP:fancymenu.general.mixin.json:MixinMinecraft,pl:mixin:APP:konkrete.mixin.json:client.MixinMinecraft,pl:mixin:A,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-1.16.5-36.2.34.jar:36.2] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$464/1367503763.call(Unknown Source) [forge-1.16.5-36.2.34.jar:36.2] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] {}

-- System Details --
Details:
    Minecraft Version: 1.16.5
    Minecraft Version ID: 1.16.5
    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: 899719976 bytes (858 MB) / 2919759872 bytes (2784 MB) up to 6524764160 bytes (6222 MB)
    CPUs: 16
    JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx7000m -Xms256m
    ModLauncher: 8.1.3+8.1.3+main-8.1.x.c94d18ec
    ModLauncher launch target: fmlclient
    ModLauncher naming: srg
    ModLauncher services: 
        /mixin-0.8.4.jar mixin PLUGINSERVICE 
        /eventbus-4.0.0.jar eventbus PLUGINSERVICE 
        /forge-1.16.5-36.2.34.jar object_holder_definalize PLUGINSERVICE 
        /forge-1.16.5-36.2.34.jar runtime_enum_extender PLUGINSERVICE 
        /accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE 
        /forge-1.16.5-36.2.34.jar capability_inject_definalize PLUGINSERVICE 
        /forge-1.16.5-36.2.34.jar runtimedistcleaner PLUGINSERVICE 
        /mixin-0.8.4.jar mixin TRANSFORMATIONSERVICE 
        /forge-1.16.5-36.2.34.jar fml TRANSFORMATIONSERVICE 
    FML: 36.2
    Forge: net.minecraftforge:36.2.34
    FML Language Providers: 
        [email protected]
        minecraft@1
    Mod List: 
        forge-1.16.5-36.2.34-client.jar                   |Minecraft                     |minecraft                     |1.16.5              |DONE      |Manifest: NOSIGNATURE
        forge-1.16.5-36.2.34-universal.jar                |Forge                         |forge                         |36.2.34             |DONE      |Manifest: 22:af:21:d8:19:82:7f:93:94:fe:2b:ac:b7:e4:41:57:68:39:87:b1:a7:5c:c6:44:f9:25:74:21:14:f5:0d:90
        fancymenu_forge_2.14.7_MC_1.16.2-1.16.5.jar       |FancyMenu                     |fancymenu                     |2.14.7              |DONE      |Manifest: NOSIGNATURE
        konkrete_forge_1.6.1_MC_1.16.2-1.16.5.jar         |Konkrete                      |konkrete                      |1.6.1               |DONE      |Manifest: NOSIGNATURE
        journeymap-1.16.5-5.8.5p6.jar                     |Journeymap                    |journeymap                    |5.8.5p6             |DONE      |Manifest: NOSIGNATURE
        Pixelmon-1.16.5-9.1.5-universal.jar               |Pixelmon Mod                  |pixelmon                      |9.1.5               |DONE      |Manifest: NOSIGNATURE
        byg-1.3.6.jar                                     |Oh The Biomes You'll Go       |byg                           |1.3.4               |DONE      |Manifest: NOSIGNATURE
        ExplorersCompass-1.16.5-1.1.2-forge.jar           |Explorer's Compass            |explorerscompass              |1.16.5-1.1.2-forge  |DONE      |Manifest: NOSIGNATURE
        NaturesCompass-1.16.5-1.9.1-forge.jar             |Nature's Compass              |naturescompass                |1.16.5-1.9.1-forge  |DONE      |Manifest: NOSIGNATURE
    Crash Report UUID: d838004c-bb94-4358-8023-dc98c09280c9
    Launched Version: forge-36.2.34
    Backend library: LWJGL version 3.2.2 build 10
    Backend API: AMD Radeon(TM) Graphics GL version 4.6.14756 Compatibility Profile Context 20.40.32.15 27.20.14032.15001, ATI Technologies Inc.
    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: 
    Current Language: English (US)
    CPU: 16x AMD Ryzen 7 5800H with Radeon Graphics 

[Spiky]

It seems like the mod causing the issue is fancymenu delete it from your "mods" folder and start your game again.