Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

load up mods
create a singleplayer world
boom, crash

Expected behavior
not to crash during world creation

Screenshots

System (please complete the following information):

• Occultism Version: occultism-1.20.1-1.81.1.jar
• OS: windows 11
• Minecraft Version: 1.20.1
• Forge: 47.1.10
• Modpack Link and Version, or list of mods:
  SmartBrainLib (Forge/Fabric/Quilt) (by Scimiguy)
  Mysterious Mountain Lib (by sz0999312)
  Ender Mail (by Chaosyr)
  Oreberries Replanted (by Mrbysco)
  SuperMartijn642's Core Lib (by SuperMartijn642)
  Nether Depths Upgrade (by scouter567)
  Enderite Mod (for Forge) (by pitti11)
  Allomancy (by legobmw99)
  Oculus (by Asek3)
  Just Another Rotten Flesh to Leather Mod (by alexdaum1)
  Tree Harvester (by Serilum)
  MVS - Moog's Voyager Structures (by finndog_123)
  Almost Unified (by AlmostReliable)
  PneumaticCraft: Repressurized (by desht_08)
  Better Combat [Fabric & Forge] (by daedelus_dev)
  Macaw's Paths and Pavings (by sketch_macaw)
  Skin Layers 3D (Fabric/Forge) (by tr7zw)
  Citadel (by sbom_xela)
  Ad Astra: Giselle Addon (by 지젤쟝다)
  All The Trims (by bawnorton)
  Portable Crafting Table (by 00theblackwolf00)
  Magnesium/Rubidium Extras (by Anthxny)
  Passive Endermen (by Serilum)
  Corail Pillar (by Corail_31)
  Immersive Weapons Compatibility Bridge (by AnonymousHacker1279)
  Wormhole (Portals) (by SuperMartijn642)
  Clumps (by Jaredlll08)
  Towers of the Wild Modded (by celsiusqc)
  Fast Portals (by gluegunner4)
  Applied Energistics 2 (by thetechnici4n)
  The Graveyard (FORGE) (by finallion_13)
  Extreme Reactors (by ZeroNoRyouki)
  Enhanced Farming (by Mrbysco)
  Underwater Enchanting (by Serilum)
  Silent Gear (by SilentChaos512)
  Variant Crafting Tables [Forge] (by Kitteh6660)
  MineColonies (by Raycoms)
  JadeColonies (by uecasm)
  Dragon Mounts: Legacy (by Kay9Unit)
  Balm (Forge Edition) (by BlayTheNinth)
  Fastload (by StockiesLad)
  Iron Bookshelves (by jahirtrap)
  Croptopia (by thethonk)
  Kotlin for Forge (by thedarkcolour)
  Farsight [Forge] (by someaddon)
  Magnesium/Rubidium Dynamic Lights (by Anthxny)
  Better Villages - Forge (by jtl_elisa)
  Iceberg [Forge] (by Grend_G)
  Cosmetic Armor Reworked (by LainMI)
  ModernFix (by embeddedt)
  Dense Ores - Abundant! (by NewJumperr)
  Visual Overhaul (by Motschen)
  Pam's HarvestCraft 2 - Trees (by pamharvestcraft)
  Iron Furnaces [FORGE] (by XenoMustache)
  Mo' Glowstone (by TheMasterGeneral)
  TrashSlot (by BlayTheNinth)
  CreativeCore (by CreativeMD)
  FerriteCore (Forge) (by malte0811)
  Pam's HarvestCraft 2 - Food Extended (by pamharvestcraft)
  Tropicraft (by Cojomax99)
  Ad Astra (by AlexNijjar)
  Waystones (by BlayTheNinth)
  Epic Samurai's (by VPixelStudio)
  Enchanting Infuser [Forge & Fabric] (by Fuzs)
  Resourceful Config (by ThatGravyBoat)
  CTD Core (by TheMasterGeneral)
  Yeetus Experimentus (by Sunekaer)
  Modonomicon (by kli_kli)
  Savage Ender Dragon[Forge/Fabric] (by someaddon)
  ESSENTIAL Mod (by SparkUniverse_)
  Corn Delight (by sz0999312)
  When Dungeons Arise - Forge! (by Aureljz)
  Valkyrien Skies (Forge/Fabric) (by triode_)
  Library Ferret - Forge (by jtl_elisa)
  Minecraft Transit Railway (Automated trains, planes, and more!) (by jonafanho)
  Better Fps - Render Distance[Forge] (by someaddon)
  Silent Lib (silentlib) (by SilentChaos512)
  Towns and Towers (by Biban_Auriu)
  Twilight Forest: The Lost Blocks (by Kitteh6660)
  Security Craft (by Geforce132)
  Trails and Tales + (by BelgieYT)
  Get It Together, Drops! (by bl4ckscor3)
  Clickable advancements[Forge/Fabric] (by someaddon)
  Dark Mode Everywhere (by Buuz135)
  Dynamic View[Forge] (by someaddon)
  Inventory Essentials (by BlayTheNinth)
  Collective (by Serilum)
  Corpse (by henkelmax)
  Macaw's Trapdoors (by sketch_macaw)
  Ambient Environment (by Jaredlll08)
  Double Doors (by Serilum)
  L_Ender 's Cataclysm (by mcl_ender)
  Immersive Aircraft [Fabric/Forge] (by Conczin)
  Server Performance - Smooth Chunk Save[Forge/Fabric] (by someaddon)
  Multi-Piston (by Raycoms)
  Iron Bows (FORGE) (by popcornman200)
  Packed Up (Backpacks) (by SuperMartijn642)
  The Lost Castle (by jack_bagel)
  MCA Reborn [Fabric/Forge] (by jahx_senpoopie)
  Additional Lanterns (by SuperMartijn642)
  playerAnimator (by KosmX)
  Architectury API (Fabric/Forge) (by shedaniel)
  Biome Music[Forge/Fabric] (by someaddon)
  Dynamic Lights (by atomicstrykergrumpy)
  Borderless Window (by nekeras)
  Leaves Be Gone (by Fuzs)
  Chunk Sending[Forge/Fabric] (by someaddon)
  The Twilight Forest (by Benimatic)
  Iron Chests (by ProgWML6)
  Macaw's Bridges (by sketch_macaw)
  Just Enough Items (JEI) (by mezz)
  Patchouli (by Vazkii)
  MrCrayfish's Furniture Mod (by MrCrayfish)
  Inventory Sorter (by cpw)
  Additional Structures (by XxRexRaptorxX)
  Nosiphus Furniture Mod (by Nosiphus)
  Ultris: Boss Expansion (by limesplatus)
  Dense Trees (by Mrbysco)
  Botarium (by CodexAdrian)
  Cooking for Blockheads (by BlayTheNinth)
  B.F. End Cities (by Anthxny)
  PlayerRevive (by CreativeMD)
  Medieval Music[Forge/Fabric] (by someaddon)
  Cristel Lib (by Cristelknight)
  Pam's HarvestCraft 2 - Food Core (by pamharvestcraft)
  Epic Knights: Shields, Armor and Weapons [Fabric & Forge] (by magistu_)
  Lithereal (by TheLightBlueGame)
  GravelMiner (by BlayTheNinth)
  Immersive Weapons (by AnonymousHacker1279)
  AI Improvements (by QueenOfMissiles)
  Ender IO (by crazypants_mc_the_second)
  JourneyMap (by techbrew)
  Time Control (by Unixkitty)
  Better Berries Redux (by The_Lemon_Juiced)
  Connected Glass (by SuperMartijn642)
  Cloth Config API (Fabric/Forge) (by shedaniel)
  Towers of the Wild: Additions (by Aureljz)
  Craftable Horse Armour & Saddle [CHA&S] (by EwyBoy)
  LevelHearts (by FireController1847)
  Farming for Blockheads (by BlayTheNinth)
  Resourceful Lib (by ThatGravyBoat)
  Create (by simibubi)
  Updating World Icon (by Cursed1nferno)
  Puzzles Lib [Forge & Fabric] (by Fuzs)
  Erroring Entity Remover Reforged (by AzureDoomC)
  Eureka! Ships! for Valkyrien Skies (Forge/Fabric) (by rubydesic)
  Aquaculture 2 (by Shadow)
  The Lost Cities (by McJty)
  Krypton Reforged (by Anthxny)
  Pam's HarvestCraft 2 - Crops (by pamharvestcraft)
  TerraBlender (Forge) (by TheAdubbz)
  Log Begone (by AzureDoomC)
  Comforts (Fabric/Forge/Quilt) (by TheIllusiveC4)
  fix GPU memory leak[Forge/Fabric] (by someaddon)
  Advanced Chimneys (by EnderLanky)
  Domum Ornamentum (by OrionOnline)
  Occultism (by kli_kli)
  Simply Light (by Flanks255)
  Better Advancements (by way2muchnoise)
  Structurize (by Raycoms)
  Vanilla Plus Tools (by Raycoms)
  Neat (by Vazkii)
  Armourer's Workshop (by RiskyKen)
  No Telemetry (by kb1000)
  Rune Craft (by XxRexRaptorxX)
  GeckoLib (by Gecko)
  Immersive Paintings [Fabric/Forge] (by Conczin)
  BlockUI (by Raycoms)
  Polymorph (Fabric/Forge/Quilt) (by TheIllusiveC4)
  ForgeEndertech (by EnderLanky)
  Leaky - Farm leak detection[Forge/Fabric] (by someaddon)
  Game Menu Mod Option [Forge] (by morimori0317)
  Neruina - Ticking Entity Fixer (by bawnorton)
  ZeroCore 2 (by ZeroNoRyouki)
  Advancement Plaques [Forge] (by Grend_G)
  SuperMartijn642's Config Lib (by SuperMartijn642)
  Entity Culling Fabric/Forge (by tr7zw)
  Biomes O' Plenty (by Forstride)
  MidnightLib (by TeamMidnightDust)
  Stylecolonies (by Raycoms)
  The Undergarden (by Quek04)
  Catalogue (by MrCrayfish)
  Amplified Nether (by Starmute)
  Diagonal Fences (by Fuzs)
  Rubidium (by Asek3)
  Large Ore Deposits (by EnderLanky)
  Jade 🔍 (by Snownee_)
  Doggy Talents Next (by dashiedev)
  Project MMO (by Harmonised_)
  Structure Essentials[Forge/Fabric] (by someaddon)
  Physics Mod (by haubna)
  Mo' Glowstone Lamps (by TheMasterGeneral)
  Creeper Firework (by DragonsPlus)
  KleeSlabs (by BlayTheNinth)
  Storage Racks (by Raycoms)
  Farmer's Delight (by vectorwing)
  Corail Woodcutter (by Corail_31)
  Curios API (Forge) (by TheIllusiveC4)
  Macaw's Fences and Walls (by sketch_macaw)
  Bad Wither No Cookie - Reloaded (by Kreezxil)

Additional context
for loading up mods to reproduce:

leave the following mods disabled,

dragon mounts legacy,
eureka
valkyrien skies
visual overhaul
tree harvester
mca reborn

the following are all the logs associated with this problem:

crash-2023-07-14_14.13.56-server.txt
launcher_log.txt
debug.log
latest.log

Ah seems like forge or MC changed how entities are initialized. I think I know what causes it and will try to patch a workaround.
If it still happens in the next Occultism version, please ping me here or open a new ticket!

Closed in b3f4833