---- Minecraft Crash Report ----
// Don't do that.

Time: 25/04/21 19:29
Description: Unexpected error

java.lang.IllegalStateException: Lock is no longer valid
at net.minecraft.world.storage.SaveFormat$LevelSave.func_237301_i_(SaveFormat.java:296) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.world.storage.SaveFormat$LevelSave.func_237298_f_(SaveFormat.java:360) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.server.MinecraftServer.func_184109_z(MinecraftServer.java:770) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:A}
at net.minecraft.server.MinecraftServer.func_184106_y(MinecraftServer.java:764) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:A}
at net.minecraft.client.renderer.GameRenderer.func_195458_a(GameRenderer.java:699) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:976) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,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-1.16.5-36.1.4.jar:36.1] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$456/589610983.call(Unknown Source) [forge-1.16.5-36.1.4.jar:36.1] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.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.world.storage.SaveFormat$LevelSave.func_237301_i_(SaveFormat.java:296) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.world.storage.SaveFormat$LevelSave.func_237298_f_(SaveFormat.java:360) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.server.MinecraftServer.func_184109_z(MinecraftServer.java:770) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:A}
at net.minecraft.server.MinecraftServer.func_184106_y(MinecraftServer.java:764) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:A}
-- Affected level --
Details:
All players: 1 total; [ClientPlayerEntity['Blackwyvern5178'/182, l='ClientLevel', x=8.50, y=65.00, z=8.50]]
Chunk stats: Client Chunk Cache: 841, 0
Level dimension: minecraft:overworld
Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 day time
Server brand: forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.world.ClientWorld.func_72914_a(ClientWorld.java:617) ~[?:?] {re:mixin,re:classloading,xf:OptiFine:default,pl:mixin:APP:abnormals_core.mixins.json:client.ClientWorldMixin,pl:mixin:A}
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2029) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:628) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,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-1.16.5-36.1.4.jar:36.1] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$456/589610983.call(Unknown Source) [forge-1.16.5-36.1.4.jar:36.1] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.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: 2008658608 bytes (1915 MB) / 5368709120 bytes (5120 MB) up to 5368709120 bytes (5120 MB)
CPUs: 2
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx5G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 8.0.9+86+master.3cf110c
ModLauncher launch target: fmlclient
ModLauncher naming: srg
ModLauncher services:
/mixin-0.8.2.jar mixin PLUGINSERVICE
/eventbus-4.0.0.jar eventbus PLUGINSERVICE
/forge-1.16.5-36.1.4.jar object_holder_definalize PLUGINSERVICE
/forge-1.16.5-36.1.4.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE
/forge-1.16.5-36.1.4.jar capability_inject_definalize PLUGINSERVICE
/forge-1.16.5-36.1.4.jar runtimedistcleaner PLUGINSERVICE
/mixin-0.8.2.jar mixin TRANSFORMATIONSERVICE
/OptiFine_1.16.5_HD_U_G7.jar OptiFine TRANSFORMATIONSERVICE
/forge-1.16.5-36.1.4.jar fml TRANSFORMATIONSERVICE
FML: 36.1
Forge: net.minecraftforge:36.1.4
FML Language Providers:
[email protected]
minecraft@1
Mod List:
mowziesmobs-1.5.16.jar |Mowzie's Mobs |mowziesmobs |1.5.16 |DONE |NOSIGNATURE
Wyrmroost-1.16.3-1.2.11.jar |Wyrmroost |wyrmroost |1.16.3-1.2.11 |DONE |NOSIGNATURE
infernal-expansion-forge-1.3.jar |Infernal Expansion |infernalexp |Release 1.3 |DONE |NOSIGNATURE
jei-1.16.5-7.6.4.88.jar |Just Enough Items |jei |7.6.4.88 |DONE |NOSIGNATURE
Druidcraft-1.16.5-0.4.52.jar |Druidcraft |druidcraft |0.4.52 |DONE |NOSIGNATURE
AttributeFix-1.16.5-10.1.2.jar |AttributeFix |attributefix |10.1.2 |DONE |eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
abnormals_core-1.16.5-3.1.1.jar |Abnormals Core |abnormals_core |3.1.1 |DONE |NOSIGNATURE
Guide-API-VP-1.16.4-2.2.1.jar |Guide-API VP |guideapi-vp |2.2.1 |DONE |NOSIGNATURE
Waystones_1.16.5-7.4.0.jar |Waystones |waystones |7.4.0 |DONE |NOSIGNATURE
glassential-forge-1.16.5-1.1.6.jar |Glassential |glassential |1.1.6 |DONE |NOSIGNATURE
fight-stick-1.16.4-1.0.0.jar |Fight Stick |fight_stick |1.0.0 |DONE |NOSIGNATURE
NeverNeededOrWanted-1.16.5-1.0.9a.jar |Never Needed Or Wanted |nnow |1.16.5-1.0.9a |DONE |NOSIGNATURE
slimierslimes-1.16.5-1.1.2.jar |Slimier Slimes |slimier-slimes |1.16.5-1.1.2 |DONE |NOSIGNATURE
CTM-MC1.16.1-1.1.2.6.jar |ConnectedTexturesMod |ctm |MC1.16.1-1.1.2.6 |DONE |NOSIGNATURE
dankstorage-3.16.jar |Dank Storage |dankstorage |3.16 |DONE |NOSIGNATURE
citadel-1.6.2.jar |Citadel |citadel |1.6.2 |DONE |NOSIGNATURE
alexsmobs-1.9.1.jar |Alex's Mobs |alexsmobs |1.9.1 |DONE |NOSIGNATURE
Bookshelf-1.16.5-10.0.7.jar |Bookshelf |bookshelf |10.0.7 |DONE |eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
BotanyPots-1.16.5-7.0.17.jar |BotanyPots |botanypots |7.0.17 |DONE |eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
reliquary-1.16.5-1.3.5.1096.jar |Reliquary |xreliquary |1.16.5-1.3.5.1096 |DONE |NOSIGNATURE
guardvillagers-1.16.5.1.2.3.jar |Guard Villagers |guardvillagers |1.2.3 |DONE |NOSIGNATURE
TinyMobFarm-1.16.4-1.1.1.jar |Tiny Mob Farm |tinymobfarm |1.1.1 |DONE |NOSIGNATURE
iceandfire-2.1.6-1.16.4.jar |Ice and Fire |iceandfire |2.1.6-1.16.4 |DONE |NOSIGNATURE
wikizoomer-1.0.3-1.16.4.jar |Wiki Zoomer |wikizoomer |1.0.3 |DONE |NOSIGNATURE
forge-1.16.5-36.1.4-universal.jar |Forge |forge |36.1.4 |DONE |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
supplementaries-1.16.5-0.12.1.jar |Supplementaries |supplementaries |1.16.5-0.12.1 |DONE |NOSIGNATURE
Upgraded+Netherite+1.16.4+-+1.8.1.jar |Upgraded Netherite |upgradednetherite |1.7.0 |DONE |NOSIGNATURE
forge-1.16.5-36.1.4-client.jar |Minecraft |minecraft |1.16.5 |DONE |NOSIGNATURE
endergetic-1.16.4-3.0.0.jar |The Endergetic Expansion |endergetic |3.0.0 |DONE |NOSIGNATURE
BotanyTrees-1.16.5-3.0.4.jar |BotanyTrees |botanytrees |3.0.4 |DONE |eb:c4:b1:67:8b:f9:0c:db:dc:4f:01:b1:8e:61:64:39:4c:10:85:0b:a6:c4:c7:48:f0:fa:95:f2:cb:08:3a:e5
oreganized-1.16.4-0.4.4-beta.jar |Oreganized Mod |oreganized |1.16.4-0.4.4-beta |DONE |NOSIGNATURE
CNB-1.16.3_5-1.2.11.jar |Creatures and Beasts |cnb |1.2.11 |DONE |NOSIGNATURE
playerex-1.1.7.5-1.16.4.jar |Player Ex |playerex |1.1.7.5 |DONE |NOSIGNATURE
curios-forge-1.16.5-4.0.5.1.jar |Curios API |curios |1.16.5-4.0.5.1 |DONE |NOSIGNATURE
Mantle-1.16.5-1.6.92.jar |Mantle |mantle |1.6.92 |DONE |NOSIGNATURE
Inspirations-1.16.5-1.2.2.jar |Inspirations |inspirations |1.2.2 |DONE |NOSIGNATURE
improved_genetics-0.7.1.jar |Improved Genetics |improved_genetics |v0.7.1 |DONE |NOSIGNATURE
extlights-3.3.jar |Extended Lights |extlights |3.3 |DONE |NOSIGNATURE
polymorph-forge-1.16.5-0.24.jar |Polymorph |polymorph |1.16.5-0.24 |DONE |NOSIGNATURE
corail_recycler-1.16-5.0.0.jar |Corail Recycler |corail_recycler |5.0.0 |DONE |NOSIGNATURE
AutoRegLib-1.6-47.jar |AutoRegLib |autoreglib |1.6-47 |DONE |NOSIGNATURE
Quark-r2.4-310.jar |Quark |quark |r2.4-310 |DONE |NOSIGNATURE
gk_unbreakable-2.4.jar |Unbreakable |gk_unbreakable |2.4 |DONE |NOSIGNATURE
elevatorid-1.16.5-1.7.13.jar |Elevator Mod |elevatorid |1.16.5-1.7.13 |DONE |NOSIGNATURE
Gobber2-Forge-1.16.5-2.3.50.jar |Gobber 2 |gobber2 |2.3.48 |DONE |NOSIGNATURE
buildersaddition-1.16.5-20210421a.jar |Builders Crafts & Addition |buildersaddition |1.16.5-20210421a |DONE |NOSIGNATURE
Vampirism-1.16.4-1.7.8.jar |Vampirism |vampirism |1.7.8 |DONE |NOSIGNATURE
mobcatcher-3.2.jar |Mob Catcher |mobcatcher |3.2 |DONE |NOSIGNATURE
OddWaterMobs[1.16.5]_1.2.5.jar |Odd Water Mobs |oddwatermobs |1.2.5 |DONE |NOSIGNATURE
The_Undergarden-1.16.5-0.5.1.jar |The Undergarden |undergarden |0.5.1 |DONE |NOSIGNATURE
byg-1.1.14.jar |Oh The Biomes You'll Go |byg |1.1.14 |DONE |NOSIGNATURE
geckolib-forge-1.16.5-3.0.30.jar |GeckoLib |geckolib3 |3.0.30 |DONE |NOSIGNATURE
lootbagmod-1.16.5-1.6.6.jar |Loot Bag Mod |lootbagmod |1.6.6 |DONE |NOSIGNATURE
Crash Report UUID: 76f1520c-571b-4b83-832f-5661b5a8505d
Launched Version: 1.16.5-forge-36.1.4
Backend library: LWJGL version 3.2.2 build 10
Backend API: GeForce GT 710/PCIe/SSE2 GL version 4.6.0 NVIDIA 461.72, NVIDIA Corporation
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: fast
Resource Packs: vanilla, mod_resources, inspirations:config_resources (incompatible), quark:emote_resources (incompatible), file/Cyclops_Monstrous.zip, file/FrostbiteBrimstone.zip, file/Dragon_Eggs_GOT.zip, file/Myrmex_Wild.zip, file/Gorgon_Greek.zip, file/Sirens_Mythical.zip, file/Pixies_Fae.zip, file/Trolls_Friendlier.zip, file/Jicklus+1.16.zip, file/Better+Clear+Water+1.16.2+.zip, file/BSG+-+Combo+-+1.16.zip
Current Language: Français (France)
CPU: 2x Intel(R) Pentium(R) CPU G630 @ 2.70GHz
OptiFine Version: OptiFine_1.16.5_HD_U_G7
OptiFine Build: 20210305-003221
Render Distance Chunks: 12
Mipmaps: 1
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.0 NVIDIA 461.72
OpenGlRenderer: GeForce GT 710/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 2

I think its just uncompatibility with other mods I dont see some error in our mod also I think I mentioned somwhere that it should not work properly with 1.16.5 and we'll fix this later....