[Bug] crashing after updating to latest

[SynergyShadow]

Observed behaviour

crash upon world load

Expected behaviour

to load without hard crashing

Steps to reproduce

1. Load World

Server Type

Single Player

Crashlog

https://pastebin.com/rePKW3vc

Iron's Spells N Spellbooks version

1.20.1-3.15.0

Forge version

1.20.1-47.4.13

Other mods

.connector
AE2 Insert Export Card [1.20.1-1.3.0]
AE2WTLib [15.3.3-forge]
Ad Astra [1.15.20]
Ad Astra: Giselle Addon [6.20]
Addons Lib [1.20.1-1.7]
Advancement Frames [1.20-2.2.8]
Advancement Plaques [1.6.9]
Alex's Caves [2.0.2]
Alex's Caves: Trimmed! [2.0.0]
Alex's Delight [1.5]
Alex's Mobs [1.22.9]
Alexs Caves Better Combat [1.0]
All The Leaks [1.1.1+1.20.1-forge]
Allurement [4.0.0]
Almanac [1.0.2]
Alshanex Familiars Mod [1.20.1_v2.5]
AmbientSounds [6.3.1]
Amendments [1.20-2.2.3]
Amethyst Additions [0.1-1.20.1]
Amplified Nether [1.2.13]
Apothic Attributes [1.3.7]
AppleSkin [2.5.1+mc1.20.1]
Applied Energistics 2 [15.4.10]
Applied Mekanistics [1.4.3]
Aquaculture 2 [2.5.7]
Aquamirae [6.1.2]
Aquamirae x Better Combat [1.0]
Archer's Paradox [5.0.0]
Architectury [9.2.14]
Armor Damage Limit [1.0.0]
Ars Additions [1.20.1-1.6.7]
Ars Creo [4.3.0]
Ars Elemental [0.6.7.8]
Ars Nouveau [4.12.7]
Ars Nouveau's Flavors & Delight [1.1.6]
Ars Ocultas [1.2.2]
Artifacts [9.5.16]
Athena [3.1.2]
AttributeFix [21.0.4]
Auroras [1.6.2]
Autochef's Delight [1.0.7+forge]
Autumnity [5.0.2]
AzureLib [3.1.3]
BHMenu [2.4.3]
BOZOID [0.1.2]
Backported Spears [1.4.0]
Bagus Lib [1.20.1-5.6.1]
Balm [7.3.38]
BedBenefits [13.0.3]
Beds Don't Explode [1.0]
Better Advancements [0.4.2.25]
Better Archeology [1.2.1-1.20.1]
Better Bundles [1.20.1-1.1.0]
Better Combat [1.9.0+1.20.1]
Better Compatibility Checker [4.0.8]
Better Fusion Reactor for Mekanism [1.4.5]
Better Golem [1.20.1-4.0.1]
Better Mob Combat [1.3.0]
Better Third Person [1.9.0]
BetterF3 [7.0.2]
Bio-Factory [0.6.0]
Biomancy [2.9.8.1-alpha.0]
Biome Backlog [1.3.0]
Blighted Beasts [1.0.0]
Blueprint [7.1.3]
Bookling Gear [3.13]
Bookshelf [20.2.13]
Boss Rifts [1.3]
Bosses of Mass Destruction [1.1.2]
Botania [1.20.1-450-FORGE]
Botarium [2.3.4]
Bountiful [6.0.4+1.20.1]
Brandon's Core [3.2.1.302]
Brazier [6.1.1]
Brew'n Chew [5.8]
Brewin' And Chewin' [1.20.1-3.2.1]
Building Gadgets 2 [1.0.8]
Caelus API [3.2.0+1.20.1]
CapeJS [1.0.0-1.20.1]
Carrascon Lib [1.20.1-0.1]
Cat Burger [6432579]
Cat Loaf [1.1.3]
CatJammies [1.20.1-1.6.2]
Cataclysm Dimension [1.5.8]
Cataclysm: Incinerator's Try Hard [1.20.1-1.1.1]
Cataclysm: Spellbooks [1.2.7-1.20.1]
Cataclysmic Combat [1.4]
Cerbons API [1.1.0]
Champions Unofficial [1.20.1-2.1.12.6]
Charging Gadgets [1.11.0]
Charm of Undying [6.5.0+1.20.1]
ChatNotify [2.6.3+1.20.1]
Chefs Delight [1.0.4-forge-1.20.1]
Cherished Worlds [6.1.7+1.20.1]
Chimes [2.0.1]
Chipped [3.0.7]
Chunky [1.3.146]
Citadel [2.6.2]
Clean Swing Through Grass [1.8]
Clockwork [1.0.2]
Cloth Config v10 API [11.1.136]
Cloud Storage [1.4.0]
Clumps [12.0.0.4]
CoFH Core [11.0.2]
Cobweb [1.0.1]
CodeChicken Lib [4.4.0.516]
Collective [8.13]
Colorful Hearts [4.3.16]
Colorwheel [1.2.0+mc1.20.1]
Colorwheel Patcher [1.0.4+mc1.20.1]
Combat Nouveau [8.0.5]
Combat Roll [1.3.3+1.20.1]
Comfortable Campfires [1.1.2+1.19.2]
Comforts [6.4.0+1.20.1]
Common Networking [1.0.5-1.20.1]
CommonCapabilities [2.9.11]
Compact Machines [6.0.3]
Complicated Bees [1.20.1-3.1.3]
Complicated Bees: Genetic Industry [1.0.1]
Compressed Creativity [1.20.1-0.2.0]
Configurable Extra Mob Drops [3.5]
Configurable Mob Potion Effects [3.6]
Configured [2.2.3]
Connected Glass [1.1.14]
Connectivity Mod [1.20.1-7.6]
Connector Extras [1.11.2+1.20.1]
Construct's Casting [2.1.1]
Construct's Casting [2.1.1]
Construction Wand [1.20.1-2.11]
Controllable [0.21.8]
Controlling [12.0.2]
Convenient Curios Container [3.5-forge-1.20.1]
CookingForBlockheads [16.0.14]
Copper-Age-Backport [0.1.4]
Corail Tombstone [9.0.9]
CorgiLib [4.0.3.4]
CoroUtil [1.20.1-1.3.7]
CosmeticArmorReworked [1.20.1-v1a]
Crafting Automat [1.2.4]
Crafting On A Stick [1.1.5]
CraftingTweaks [18.2.6]
Crash Utilities [8.1.4]
CrashExploitFixer [1.1.0]
Create [6.0.8]
Create Big Cannons [5.10.1]
Create Hypertube [0.3.0]
Create Jetpack [4.4.6]
Create Simple Generator [1.0.9-1.20.1]
Create Slice & Dice [3.6.0]
Create: Copycats+ [3.0.4+mc.1.20.1-forge]
Create: Gunsmithing [1.4.1]
Create: Interiors [0.6.0]
Create: Radars [0.3]
Create: Rustic Structures [1.0.0]
CreativeCore [2.12.32]
Creeper Confetti [4.3]
Creeper Overhaul [3.0.2]
Cristel Lib [1.1.6]
Crust [4.9.17]
Cucumber Library [7.0.16]
Cupboard utilities [1.20.1-2.7]
Curios API [5.14.1+1.20.1]
Curious Armor Stands [1.20-5.1.0]
Current Game Music Track [2.4]
Custom Portal API ReForged [1.0.4]
Custom Portals Mod [1.0.0-1.20.1]
Customizable Player Models [-]
Cyclops Core [1.21.3]
DEUF - Duplicate Entity UUID Fix [1.20.1-1.3]
Daily Rewards [5.3.0]
Dank Storage [16]
DarkModeEverywhere [1.20.1-1.2.5]
Data Anchor [1.0.0.20]
DeathButThree [1.20.1-2.0.0]
DeathKnell [10.0.4]
Default Options [18.0.4]
Delightful [3.7.8]
Dimension Viewer [1.4.0]
DimensionalSycnFixes [1.20.1-0.0.1]
Ding [1.5.0]
Domestication Innovation (Fixed) [1.7.2]
Domum Ornamentum [1.20.1-1.0.295-snapshot]
Dreadsteel [1.20.1-1.2.0]
Drippy Loading Screen [3.1.0]
Dungeon Crawl [2.3.15]
Dynamic FPS [3.11.3]
Dynamic view distance [2.3]
DynamicTrim [1.4.1]
Eccentric Tome [1.20.1-1.10.4]
EdivadLib [2.0.1]
Elysium [1.1.3]
Elytra Slot [6.4.4+1.20.1]
Elytra Trims [3.9.3]
Embeddium [0.3.31+mc1.20.1]
Embeddium Extra [0.5.4.4+mc1.20.1-build.131]
Enchantment Library at Home [1.0.2]
End Remastered [5.3.3-R-1.20.1]
End's Delight [2.5.1+forge.1.20.1]
Ender IO [6.2.16-beta]
Ender Trigon [1.20.1-1.1]
Energy Meter [1.20.1-1.0.0]
Enhanced Block Entities [0.9+1.20]
Enhanced Boss Bars [1.20.1-1.0.0]
Enhanced Celestials [1.20.1-5.0.3.1]
Entity Model Features [3.0.10]
Entity Sound Features [0.7.1]
Entity Texture Features [7.0.8]
EntityCulling [1.9.5]
EntityJS [0.6.6-1.20.1]
Essential Mod [j0OZeOKh]
EtSTLib [3.0.0-beta.15]
Etched [3.0.4]
Eternal Currencies [0.1.4-BETA]
EuphoriaPatcher [1.7.8-r5.6.1-forge]
Exordium [1.2.1]
ExpandAbility [9.0.4]
Explorer's Compass [1.20.1-1.3.3-forge]
Exposure [1.7.16]
ExtraLib [2.1.4]
ExtraQuests [FTB Quests] [1.6.1]
FTB Chunks [2001.3.6]
FTB Essentials [2001.2.3]
FTB Library [2001.2.12]
FTB Quests [2001.4.17]
FTB Quests Localizer [3.2.2]
FTB Ranks [2001.1.7]
FTB Teams [2001.3.1]
FTB XMod Compat [2.1.3]
Faewulf's Lib [1.3.2]
Fairy Lights [7.0.0]
FancyMenu [3.8.1]
Farmer's Cutting: Oh The Biomes We've Gone [1.20.1-1.1-forge]
Farmer's Delight [1.20.1-1.2.9]
Farmer's Respite [1.20.1-2.1]
Farming for Blockheads [14.0.4]
Farsight mod [1.20.1-4.5]
Farsighted Mobs [1.1]
Fast Leaf Decay [32]
Fast Suite [5.1.1]
FastQuit [3.0.1+1.20.1forge]
Ferrite Core [6.0.1]
FindMe [3.2.3]
Flerovium [1.2.16]
FlickerFix [4.0.1]
Floating Islands [1.4.1.2]
Flux Networks [7.2.1.15]
ForgeEndertech [11.1.9.0]
Forgified Fabric API [0.92.6+1.11.14+1.20.1]
Framework [0.7.15]
Friends&Foes [3.0.9]
FullStack Watchdog [1.0.1+1.19.2-forge]
Fusion [1.2.11+c]
Fzzy Config [0.7.4+1.20.1+forge]
GTBC's SpellLib [1.4.0-1.20.1]
GameStages [15.0.2]
Gateways To Eternity [4.2.6]
GeckoLib 4 [4.8.2]
Get It Together, Drops! [1.3]
Gliders [1.2.0]
GlitchCore [0.0.1.1]
Glodium [1.20-1.5-forge]
Goblin Traders [1.11.5]
Goety [2.5.43.2]
Goety Cataclysm [1.20-1.6.4]
Goety and Spillage [1.20-1.4.5]
Golems Are Friends Not Fodder [1.20.0-1.0.1]
Gone Fishin' [0.1-1.20.1]
Gpu memory leak fix [1.20.1-1.8]
Guard Villagers [1.20.1-1.6.15]
Guide-API VP [2.2.6]
GuideME [20.1.14]
GunpowderLib [1.20.2-2.2.2]
HT's TreeChop [0.19.0]
Hex Casting [0.11.3]
Hex-Ars Linker [1.20.1-0.9.2.3]
Highlighter [1.1.9]
Horseman [1.3.14]
Horses Can Swim [1.0.1]
Hourglass [1.2.1.1]
Huge Structure Blocks [1.0.9]
Hunters Returns [1.20.1-11.8.0]
Ice and Fire [2.1.13-1.20.1]
Ice and Fire x Better Combat [1.0.1]
Iceberg [1.1.25]
Illage and Spell-age [1.1.0-1.20.1]
Illage and Spillage: Respillaged [1.2.8]
Illager Additions [1.20.1-0.0.2-alpha]
Illagers Wear Armor [1.20.1-1.4.0]
ImmediatelyFast [1.5.3+1.20.4]
Immersive Aircraft [1.4.0+1.20.1]
Immersive Armors [1.7.1+1.20.1]
Immersive Machinery [0.2.0+1.20.1]
Immersive Melodies [0.6.0+1.20.1]
Immersive Weathering [1.20.1-2.0.5]
ImmersiveUI [0.3.0]
InControl [1.20-9.4.5]
Incubation [4.0.4]
Infinity Buttons [1.20.1-4.0.7]
Inline [1.20.1-1.2.2]
InsaneLib [1.23.3]
Integrated API [1.5.3+1.20.1-forge]
Integrated Cataclysm [1.0.5+1.20.1]
Integrated Dungeons and Structures [1.12.1+1.20.1]
Integrated Stronghold [1.1.2+1.20.1-forge]
Integrated Villages [1.3.0+1.20.1-forge]
IntegratedCrafting [1.4.1]
IntegratedDynamics [1.29.10]
IntegratedTerminals [1.6.15]
IntegratedTunnels [1.9.3]
Interpret [1.0.0]
Iron's Spells 'n Spellbooks [1.20.1-3.15.0]
Item Borders [1.2.2]
Item Filters [2001.1.0-build.59]
Jade [11.13.2+forge]
Jade Addons [5.5.0+forge]
Jaden's Nether Expansion [2.3.5]
Jaden's Nether Expansion Delight [1.20.1-1.0.4-forge]
Jaffactory Mod [0.1.1]
Jellyfishing [2.0.0]
JeremySeq's Damage Indicator [2.2.1-1.20.1]
JinxedLib [1.0.3]
Jolly Boxes [1.2]
Joy of Painting [1.20.1-1.0.1]
Json Things [0.9.10]
Jumpy Boats [1.20.0-1.0.5]
Just Enough Breeding [2.5.0]
Just Enough Effects Descriptions [1.20-2.2.5]
Just Enough Items [15.20.0.129]
Just Enough Mekanism Multiblocks [4.15]
Just Enough Professions (JEP) [3.0.1]
Just Enough Resources [1.4.0.247]
Kambrik [6.1.1+1.20.1]
Kelp Fertilizer [3.4]
Kiwi Library [11.10.0+forge]
Knight Lib [1.4.3]
Konkrete [1.8.0]
Kotlin for Forge [Zsh14XeQ]
KubeJS [2001.6.5-build.16]
KubeJS Create [2001.3.0-build.8]
Large Ore Deposits [8.1.8.0]
Lava Fishing [1.1.3]
Leaderboards [1.0.1]
Legendary Tabs [1.20.1-1.1.3.1]
Legendary Tooltips [1.4.5]
Let Me Despawn [1.5.0]
LibX [1.20.1-5.0.14]
Limited Chunkloading [1.8]
LionfishAPI [2.4-Fix]
Lithostitched [1.4.11]
Little Logistics [1.20.1.2]
Log Begone [1.0.8]
Logprot [1.4]
LongNbtKiller [1.0.0]
LootJS [1.20.1-2.13.0]
Lootintegrations mod [1.20.1-4.7]
Lootr [0.7.35.94]
LowDragLib [1.0.48]
Luggage [1.20-1.6.2]
Lychee Tweaker [5.1.22+forge]
MCE2 Library [0.1-1.20.1]
ME Requester [1.20.1-1.1.5]
MaFgLib [0.1.14-mc1.20.1]
Macaw's - Oh The Biomes We've Gone [1.20.1-1.5]
Macaw's Bridges [3.1.0]
Macaw's Doors [1.1.2]
Macaw's Fences and Walls [1.2.1]
Macaw's Furniture [3.4.1]
Macaw's Lights and Lamps [1.1.5]
Macaw's Paintings [1.0.5]
Macaw's Paths and Pavings [1.1.1]
Macaw's Roofs [2.3.2]
Macaw's Trapdoors [1.1.5]
Macaw's Windows [2.4.2]
Majrusz Library [7.0.8]
Majrusz's Accessories [1.5.3]
Majrusz's Progressive Difficulty [1.9.10]
Man of Many Planes [0.2.0+1.20.1]
Mantle [1.11.97]
MaxHealthFix [12.0.3]
McJtyLib [1.20-8.0.7]
Mekanism [10.4.16]
Mekanism: Generators [10.4.16]
Melody [1.0.2]
Mighty Mail [1.1.4]
Milkable Creepers [0.1-1.20.1]
MineColonies [1.20.1-1.1.1160-snapshot]
Mineblock's Repeated Utilities [1.0.4+1.20.1+forge]
Minecraft Cursor [3.11.2+1.20.1-patch.1]
Miner's Delight [1.20.1-1.2.3]
Mining Gadgets [1.15.6]
MmmMmmMmmmmm [1.20-2.0.9]
Mob Despawn Timers [3.0.1]
Mob Grinding Utils [1.20.1-1.1.0]
Mob Player Animator [1.3.3]
Mob Population Control [1.0.0]
Model Gap Fix [1.15]
Modern Startup QOL [1.1-1.20.X]
ModernFix [5.25.2+mc1.20.1]
Modonomicon [1.79.2]
MonoLib [2.1.0]
Monobank [1.1.5]
Moonlight Library [1.20-2.16.19]
More Mekanism Processing [4.4]
More Overlays Updated [1.24.1]
MoreJS [0.10.1]
MoreMcmeta [1.20.1-4.5.2]
MoreMcmeta Emissive Textures Plugin [1.20.1-2.0.4]
Mouse Tweaks [2.25.1]
Mowzie's Mobs [1.7.3]
MrCrayfish's Furniture Mod: Refurbished [1.0.20]
Multi-Piston [1.20-0.0.47-snapshot]
MultiplayerSpawners [1.0.3]
Mutant Monsters [8.0.8]
My Nether's Delight [1.20.1-1.7.5]
MyServerIsCompatible [1.0]
Mysterious Mountain Lib [1.6.30-1.20.1]
Mystical Oak Tree [1.20-1.11]
NaNny [1.0.1]
Named Mob Death Notifier [1.0]
Nature's Compass [1.20.1-1.11.2-forge]
Neko's Enchanted Books [2.0.3]
Nether Portal Configurator [0.1-1.20.1]
NetherPortalFix [13.0.1]
Netherite Horse Armor [1.20.1-2.0a]
Nirvana Lib [2.1.1]
No Chat Reports [1.20.1-v2.2.2]
No Villager Death Messages [5.0.0]
Noisium [2.3.0+mc1.20-1.20.1]
Not Enough Crashes [4.4.9+1.20.1]
Not Enough Recipe Book [0.4.1]
Nuclear Bomb Bay [1.20.1-SNAPSHOT]
NukaTeam's Gun Lib [3.0.6]
Obscure API [18]
Observable [4.4.2]
Occultism [1.156.0]
Ocean's Delight [1.0.2-1.20]
OctoLib [0.5.0.1]
Oculus [1.8.0]
Oh The Biomes We've Gone [1.7.4]
Oh The Trees You'll Grow [1.4.2]
Overloaded Armor Bar [1.20.1-1]
PAUCAL [0.6.0+1.20.1-forge]
PacketFixer [3.3.1]
Particular [1.2.7]
Passive Shield [3.7]
Patchouli [1.20.1-84.1-FORGE]
Peaceful Moon [1.20]
Perception [0.1.4]
Perfectly Balanced Bows [0.1-1.20.1]
Pick Up Notifier [8.0.0]
Piglin Proliferation [1.20.1-1.2.6]
Placebo [8.6.3]
Platform [1.2.11.4]
Player Animator [1.0.2-rc1+1.20]
PneumaticCraft: Repressurized [6.0.22+mc1.20.1]
Polymorph [0.49.10+1.20.1]
Polymorphic Energistics [0.1.1-1.20.1]
PonderJS [2.1.0]
Portable Pet Sphere [1.0.1]
Pretty Rain [1.1.3]
Prism [1.0.5]
Pufferfish's Attributes [0.8.0]
Pufferfish's Skills [0.17.1]
Pufferfish's Unofficial Additions [2.2.4]
Puzzles Lib [8.1.33]
Quark [4.0-462]
Quests Additions [1.4.7]
RAC-Compat [0.1.3]
RAM-Compat [0.1.4]
Radiant Gear [2.2.0+1.20.1]
Radium [0.12.4+git.26c9d8e]
Raid Counter [1.2-1.20.1]
Rainbows [1.5]
Ranged Damage Limit [1.20.1-1.1.0]
Ratatouille [1.3.7]
Rats [1.20.1-8.1.3]
Raw's Visual Keybinder [1.20.1 - 0.1.10]
ReBroken Blade [1.0]
Rediscovered [2.1.0]
Relics [0.8.0.11]
Repurposed Structures [7.1.19+1.20.1-forge]
Resourceful Lib [2.1.29]
Resourcefulconfig [2.1.3]
Resourcify [1.7.5]
Responsive Shields [2.3]
Rhino [2001.2.3-build.10]
Ribbits [1.20.1-Forge-3.0.5]
Ritchie's Projectile Library [2.1.1]
RiverRedux [0.3.1]
Royal Variations [2.0.2]
Runelic [18.0.2]
SDM UI Lib [1.20.1-1.8.3]
Scalable Cat's Force [4810184]
Scannable [1.7.12+18ccb75]
Scholar [1.1.9]
Searchables [1.0.3]
Second Chance Forge [1.5.1]
ServerConfig Updater [4.0.2]
ServerCore [1.5.2+1.20.1]
ShadowizardLib [1.20.1-1.3.1]
Sherds API [4.0.4]
ShetiPhian-Core [1.20.1-1.5]
Shield Expansion [1.2.2]
Simple Backups [1.20.1-3.1.22]
Simple Discord Rich Presence [4.0.3-build.40+mc1.20.1]
Simple Voice Chat [1.20.1-2.6.11]
Simply Stacked Dimensions [1.20-1.0]
Sinytra Connector [XoBmts8o]
Skillcloaks [1.20.1-1.2.4.1]
Sky Villages [1.0.4]
SmartBrainLib [1.15]
Smarter Farmers [1.20-2.1.2]
Smooth Boot (Reloaded) [0.0.4]
Smoothchunk mod [1.20.1-4.1]
Sodium Dynamic Lights [1.0.9]
Sodium Extras [1.0.6]
Sodium Options API [1.0.10]
Some Assembly Required [1.20.1-4.2.2]
Sooty Chimneys [1.2.4]
Sophisticated Backpacks [3.24.18.1488]
Sophisticated Core [1.2.117.1347]
Sophisticated Storage [1.4.19.1416]
Soul Fire'd [4.0.11]
Sounds [2.2.1+1.20.1+forge]
SparseStructuresReforged [1.20.1-0.0.1]
Special Mobs [1.20.1-4.1.17]
Species [3.5]
Spells Gone Wrong [1.20.1-2.0.1]
Spice of Life: Carrot Edition [1.15.1]
Stardew Fishing [3.2]
Starter Kit [7.4]
Storage Drawers [12.14.3]
Structure Essentials mod [1.20.1-4.8]
Structure Gel API [2.16.2]
Structurize [1.20.1-1.0.797-snapshot]
Stylish Effects [8.0.2]
SuperMartijn642's Config Library [1.1.8]
SuperMartijn642's Core Lib [1.1.19]
Supplementaries [1.20-3.1.41]
TACT [1.5.1]
TCIntegrations [2.0.25.17]
TConJEI [1.5.1]
Table Top Craft [1.20.1-6.1.2]
TerraBlender [3.0.1.10]
Terralith [2.5.4]
Text Animator [2.5.4]
The Bumblezone [7.9.7+1.20.1-forge]
The Conjurer [1.1.6]
The Ghast Cow mod [2.0.0]
The Great Below [0.1-1.20.1]
The Masquerade [1.2.2]
The Root of Fear [1.0.10]
Thermal Cultivation [11.0.1]
Thermal Dynamics [11.0.1]
Thermal Expansion [11.0.1]
Thermal Foundation [11.0.6]
Thermal Innovation [11.0.1]
Thermal Integration [11.0.1]
Thermal Locomotion [11.0.1]
Thief [1.2.2]
This boat is MINE! [1.0.1]
Thoms Wandering Collector [1.20.1-1.0]
Time In A Bottle [4.0.4-mc1.20.1]
Tinker Tantrum [1.1.2]
Tinker in Caves [1.0.4]
Tinker's Compatability [1.0.0]
Tinkers Construct: Emergence [1.0.1]
Tinkers' Advanced [3.0.0-beta.13fix]
Tinkers' Better Combat [1.8.6]
Tinkers' Construct [3.11.1.158]
Tinkers' Jewelry [1.2.0]
Tinkers' Katanas [1.4.0]
Tips [12.1.8]
Titanium [3.8.32]
Titles [1.20.1-3.8.3]
ToadLib [1.3.5]
Toast Control [8.0.3]
Towers of the Wild Modded [1.0.6]
TownTalk [1.1.0]
Trading Post [8.0.2]
Trail&Tales Delight [1.4]
Transmog [1.3.0+1.20]
Trash Compactor [1.0.2]
Traveler's Titles [1.20-Forge-4.0.2]
Trials Chambers [2.3.4]
Turtle Armor [5.1]
UI Library Mod [1.20.1-1.0.192-snapshot]
Underground Rivers [1.0.1]
Unique Accessories [1.3.3]
Unlit Campfire [1.20.1-1.9.2.1]
Untitled Duck Mod [1.2.0-hotfix]
Updating World Icon [1.0.1]
VNDialog [1.1.2-1.20.1]
Vampire's Delight [0.1.7e]
Vampires Need Umbrellas [1.0.1]
Vampiric Ageing [1.20.1-1.3.26]
Vampirism [1.10.13]
Vanilla Backport Compat [1.2]
VanillaBackport [1.1.5.2.0]
VanillaBackport: Mob Variants Compat [1.4.1]
Vein Mining [1.5.0+1.20.1]
Wandering Trader May Leave [1.1]
Waystones [14.1.17]
What Are They Up To [1.20.1-1.2.3]
What Are You Voting For? 2023 [1.2.5]
What's your build [0.4.3]
Wither Reincarnated [1.0.5]
World Play Time [1.2.3]
Xaero's Minimap [25.3.5]
Xaero's World Map [1.40.6]
XaeroZoomout [1.1.0]
YUNG's API [1.20-Forge-4.0.6]
YUNG's Better Mineshafts [1.20-Forge-4.0.4]
YUNG's Better Nether Fortresses [1.20-Forge-2.0.6]
YUNG's Menu Tweaks [1.20.1-Forge-1.0.2]
Yeetus Experimentus [2.3.0-build.4+mc1.20.1]
YetAnotherConfigLib [3.6.6+1.20.1-forge]
Zero CORE 2 [1.20.1-2.1.48]
Zeta [1.0-31]
ae2CraftingTree [1.20.1-1.1.1]
aleki's Nifty Ships [1.0.14]
betterfpsdist mod [1.20.1-6.0]
biomemusic mod [1.20.1-3.5]
brutalbosses mod [1.20.1-8.4]
cataclysm [3.16]
chunksending mod [1.20.1-2.8]
clickadv mod [1.20.1-3.8]
dragonfight mod [1.20.1-4.7]
e4mc [5.5.4]
evolution mod [1.20.1-1.7]
fastasyncworldsave mod [1.20.1-2.6]
flib [0.0.15]
iChunUtil [1.0.3]
lootintegrations_cataclysm mod [1]
lootintegrations_dungeoncrawl mod [1]
lootintegrations_vanilla mod [1]
mutil [6.2.0]
recipeessentials mod [1.20.1-4.0]
spark [1.10.53]
stylecolonies mod [1.20.1-1.15.50]
tconplanner [1.6]

Crashlog Check

• I understand if this is a crashbug and I did not attach a crashlog, this will not be handled

Fabric Check

• I understand if I am using Farbic APIs or Connector, this will not be handled

1.20.1 Check

• I understand that addons will cause numerous issues with the new 1.20.1 update, and I have confirmed this is not an issue with an outdated addon by reproducing this with just Iron's Spells 'n Spellbooks (on 1.20.1)

[iron431]

this is an issue with outdated addons.

[SynergyShadow]

if i dont mind, what addons would i need to wait for, and seems to work without minecolonies for some reason

[iron431]

iasspellbooks

[DarkDruid653]

Which mod addon is causing this problem? What is iasspellbooks? I do not see it in the list of mods, please give the full name of the addon.

[SynergyShadow]

illage and spell-age (https://www.curseforge.com/minecraft/mc-mods/illage-and-spell-age/comments)