And this is on singleplayer so I'm also not sure why it says "server"

Time: 2024-07-04 16:23:02
Description: Exception in server tick loop

java.lang.AbstractMethodError: Receiver class dev.cammiescorner.icarus.core.registry.ModItems$$Lambda$12559/0x0000000801952518 does not define or inherit an implementation of the resolved method 'abstract void accept(net.minecraft.class_1761$class_8128, net.minecraft.class_1761$class_7704)' of interface net.minecraft.class_1761$class_7914.
at net.minecraft.class_1761.method_47306(class_1761.java:96)
at net.minecraft.class_1761.polymer$getContentsWith(class_1761.java:2538)
at eu.pb4.polymer.core.api.item.PolymerItemGroupUtils.getContentsFor(PolymerItemGroupUtils.java:39)
at eu.pb4.polymer.core.api.item.PolymerItemGroupUtils.getContentsFor(PolymerItemGroupUtils.java:35)
at eu.pb4.polymer.core.impl.networking.packets.PolymerItemGroupContent.of(PolymerItemGroupContent.java:24)
at eu.pb4.polymer.core.impl.networking.PolymerServerProtocol.syncItemGroupContents(PolymerServerProtocol.java:239)
at eu.pb4.polymer.core.impl.networking.PolymerServerProtocol.syncItemGroup(PolymerServerProtocol.java:224)
at eu.pb4.polymer.core.impl.networking.PolymerServerProtocol.sendCreativeSyncPackets(PolymerServerProtocol.java:211)
at eu.pb4.polymer.core.impl.networking.PolymerServerProtocol.sendSyncPackets(PolymerServerProtocol.java:151)
at eu.pb4.polymer.core.impl.networking.PolymerServerProtocolHandler.lambda$handleSyncRequest$2(PolymerServerProtocolHandler.java:56)
at net.minecraft.class_3738.run(class_3738.java:18)
at net.minecraft.class_1255.method_18859(class_1255.java:156)
at net.minecraft.class_4093.method_18859(class_4093.java:23)
at net.minecraft.server.MinecraftServer.method_24306(MinecraftServer.java:786)
at net.minecraft.server.MinecraftServer.method_18859(MinecraftServer.java:165)
at net.minecraft.class_1255.method_16075(class_1255.java:130)
at net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:768)
at net.minecraft.server.MinecraftServer.method_16075(MinecraftServer.java:762)
at net.minecraft.class_1255.method_5383(class_1255.java:115)
at net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:746)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:679)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:266)
at java.base/java.lang.Thread.run(Thread.java:833)

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

-- System Details --
Details:
Minecraft Version: 1.19.4
Minecraft Version ID: 1.19.4
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.8, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 6204382472 bytes (5916 MiB) / 16559112192 bytes (15792 MiB) up to 26809991168 bytes (25568 MiB)
CPUs: 32
Graphics card #0 name: NVIDIA GeForce RTX 4090
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 4095.00
Graphics card #0 deviceId: 0x2684
Graphics card #0 versionInfo: DriverVersion=31.0.15.5186
Memory slot #0 capacity (MB): 16384.00
Memory slot #0 clockSpeed (GHz): 4.80
Memory slot #0 type: Unknown
Memory slot #1 capacity (MB): 16384.00
Memory slot #1 clockSpeed (GHz): 4.80
Memory slot #1 type: Unknown
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx25568m -Xms256m
Fabric Mods:
ad_astra: Ad Astra 1.14.1
ad_astra_giselle_addon: Ad Astra: Giselle Addon 3.4
additionaladditions: Additional Additions 5.3.0
additionallanterns: Additional Lanterns 1.1.1a
additionalstructures: Additional Structures 4.1.2
advanced-xray-fabric: Advanced XRay (Fabric) 1.19.4-1.4.0-build.15
advancednetherite: Advanced Netherite 2.0.2-1.19.4
alloy_forgery: Alloy Forgery 2.0.20+1.19.4
alternate-current: Alternate Current 1.7.0
amecs: Amecs 1.3.10+mc.1.19.4
amecsapi: Amecs API 1.4.0+mc1.19.4
amethyst_core: Amethyst Core 1.2.2+1.19.4
common-protection-api: Common Protection API 1.0.0
amethyst_imbuement: Amethyst Imbuement 1.19.4-06
conditional-mixin: conditional mixin 0.3.2
fzzy_config: Fzzy Config 0.1.1+1.19.3
playerabilitylib: Pal 1.7.0
structurized-reborn: Structurized Reborn 1.19.4-01
anvil_fix: AnvilFix 19.0.2
appleskin: AppleSkin 2.5.1+mc1.19.4
architectury: Architectury 8.2.91
ash: Ash API 1.0.4
autoswitch: AutoSwitch 6.0.2
autoswitch-api: AutoSwitch API 3.0.0
autotools: AutoTools 2.0
bambooeverything: Bamboo Everything 2.4.1-build.53+mc1.19.4
bclib: BCLib 2.3.5
wunderlib: WunderLib 1.0.1
beaconoverhaul: Beacon Overhaul 1.7.7+1.19.4
reach-entity-attributes: Reach Entity Attributes 2.3.2
betterend: Better End 3.2.5
betterf3: BetterF3 6.0.3
betterfurnacesreforged: Better Furnaces Reforged 1.1.2
bettermounthud: Better Mount HUD 1.2.1
betternether: Better Nether 8.2.3
betterthirdperson: Better Third Person 1.9.0
biggerspongeabsorptionradius: Bigger Sponge Absorption Radius 3.1
bitsandchisels: BitsAndChisels 2.7.1
stacc: Stacc 1.5.2+boneless
blockus: Blockus 2.6.9+1.19.4
bobby: Bobby 4.0.6
com_typesafe_config: config 1.4.2
io_leangen_geantyref_geantyref: geantyref 1.3.13
org_spongepowered_configurate-core: configurate-core 4.1.2
org_spongepowered_configurate-hocon: configurate-hocon 4.1.2
bookshelf: Bookshelf 18.0.6
bosses_of_mass_destruction: Bosses of Mass Destruction (Beta) 1.6.1-1.19.4
maelstrom_library: Maelstrom Library 1.5.1-1.19.4
multipart_entities: MultipartEntities 1.4-1.19.4
botarium: Botarium 2.0.5
bridgingmod: Bridging Mod 2.3.0+1.19.4
brrp_v1: Better Runtime Resource Pack (BRRP) v1 1.0.1
byg: Oh The Biomes You'll Go 4.0.1.1
capes: Capes 1.5.3+1.19.4
cardinal-components: Cardinal Components API 5.1.0
cardinal-components-base: Cardinal Components API (base) 5.1.0
cardinal-components-block: Cardinal Components API (blocks) 5.1.0
cardinal-components-chunk: Cardinal Components API (chunks) 5.1.0
cardinal-components-entity: Cardinal Components API (entities) 5.1.0
cardinal-components-item: Cardinal Components API (items) 5.1.0
cardinal-components-level: Cardinal Components API (world saves) 5.1.0
cardinal-components-scoreboard: Cardinal Components API (scoreboard) 5.1.0
cardinal-components-world: Cardinal Components API (worlds) 5.1.0
carryon: Carry On 2.0.6.27
chat_heads: Chat Heads 0.12.3
cherishedworlds: Cherished Worlds 6.0.5+1.19.4
chesttracker: Chest Tracker 1.1.21
libgui: LibGui 7.0.0-beta.2+1.19.4
jankson: Jankson 5.0.1+j1.2.2
libninepatch: LibNinePatch 1.2.0
whereisit: Where Is It 1.14.16
clickthrough: ClickThrough 1.19.4-fabric0.76.0-0.4
crowdin-translate: CrowdinTranslate 1.4+1.19.3
gbfabrictools: GBfabrictools 1.4+1.19.4
cloth-config: Cloth Config v10 10.1.117
cloth-basic-math: cloth-basic-math 0.6.1
clumps: Clumps 10.0.0.4
cmdkeybind: Command Macros 1.6.2-1.19.4
kyrptconfig: Kyrpt Config 1.5.2-1.19.4
collective: Collective 6.66
colytra: Colytra 6.1.1+1.19.4
spectrelib: SpectreLib 0.12.7+1.19.2
compressedblocks: Compressed Blocks 1.5.0
computercraft: CC: Tweaked 1.108.0
com_jcraft_jzlib: jzlib 1.1.3
io_netty_netty-codec-http: netty-codec-http 4.1.82.Final
io_netty_netty-codec-socks: netty-codec-socks 4.1.82.Final
io_netty_netty-handler-proxy: netty-handler-proxy 4.1.82.Final
org_squiddev_cobalt: Cobalt 0.7.3
consistency_plus: Consistency Plus 0.5.2+RC.2+1.19.4
stonecutter_recipe_tags: Stonecutter Recipe Tags 5.1.1+1.19.3.c283aa2.fabric
controllable: Controllable 0.19.2
io_github_libsdl4j_libsdl4j: libsdl4j 2.26.4-1.2
controlling: Controlling For Fabric 11.1.5
corgilib: CorgiLib 3.0.0.0
com_electronwill_night-config_core: core 3.6.6
com_electronwill_night-config_toml: toml 3.6.6
craftify: Craftify 1.16.0
universalcraft: UniversalCraft 342
cristellib: Cristel Lib 1.1.2
customizableelytra: Customizable Elytra 1.6.6-1.19.4
dark-enchanting: Dark Enchanting 1.0.1+1.19.4
omega-config: OmegaConfig 1.2.3-1.18.1
darkflight: DarkFlight - Simple Jetpack 1.0.4
dawn: Dawn API 4.2.1
dimdoors: DimensionalDoors 5.2.0
com_flowpowered_flow-math: flow-math 1.0.3
com_github_dimensionaldevelopment_poly2tri_java: poly2tri.java 0.1.1
mm: Manningham Mills 2.3
org_jgrapht_jgrapht-core: jgrapht-core 1.1.0
doubledoors: Double Doors 5.0
dragonloot: DragonLoot 1.1.4
dramaticdoors: Dramatic Doors (Fabric) 1.19.4-2.0.1
eatinganimationid: Eating Animation 1.9.3
eldritch_mobs: EldritchMobs 1.14.0
polymer-blocks: Polymer (Textured Blocks) 0.4.11+1.19.4
polymer-core: Polymer (Core) 0.4.11+1.19.4
polymer-networking: Polymer (Networking) 0.4.11+1.19.4
polymer-common: Polymer (Common) 0.4.11+1.19.4
packet_tweaker: Packet Tweaker 0.4.0+1.19.4
polymer-registry-sync-manipulator: Polymer (Registry Sync Manipulator) 0.4.11+1.19.4
server_translations_api: Server Translations API 2.0.0-beta.2+1.19.4-pre2
elytraslot: Elytra Slot 6.2.1+1.19.4
emeraldequipment: Emerald Equipment 1.0.7
enchancement: Enchancement 1.19-21
step-height-entity-attribute: Step Height Entity Attribute 1.2.0
enchanted-vertical-slabs: Enchanted Vertical Slabs 1.8.1
enchantedlib: Enchanted Lib 0.2.1
enchantingcommands: Enchanting Commands 3.0
enchantinginfuser: Enchanting Infuser 6.0.0
enchdesc: EnchantmentDescriptions 15.0.3
enderchests: EnderChests 1.1.7
endrem: End Remastered 5.2.1
enhancedblockentities: Enhanced Block Entities 0.9+1.19.4
advanced_runtime_resource_pack: Runtime Resource Pack 0.6.7
spruceui: SpruceUI 4.2.0+1.19.4
enhancedmovement: Enhanced Movement 1.0.5
entangled: Entangled 1.3.18
essential: Essential 1.3.2.7+g7245995b31
essential-container: essential-container 1.0.0
essential-loader: essential-loader 1.2.3
essential-dependencies: Essential Dependencies 0
elementa: Elementa 649
vigilance: Vigilance 297
expandedstorage: Expanded Storage 9.0.4
extended_armor_bars: Extended Armor Bars 1.2.1
fabric-api: Fabric API 0.87.2+1.19.4
fabric-api-base: Fabric API Base 0.4.28+737a6ee8f4
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.29+504944c8f4
fabric-biome-api-v1: Fabric Biome API (v1) 13.0.10+6b242079f4
fabric-block-api-v1: Fabric Block API (v1) 1.0.8+e022e5d1f4
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.38+10ce000ff4
fabric-client-tags-api-v1: Fabric Client Tags 1.1.1+0eee1254f4
fabric-command-api-v1: Fabric Command API (v1) 1.2.31+f71b366ff4
fabric-command-api-v2: Fabric Command API (v2) 2.2.10+10ce000ff4
fabric-commands-v0: Fabric Commands (v0) 0.2.48+df3654b3f4
fabric-containers-v0: Fabric Containers (v0) 0.1.59+df3654b3f4
fabric-content-registries-v0: Fabric Content Registries (v0) 3.5.14+10ce000ff4
fabric-convention-tags-v1: Fabric Convention Tags 1.5.3+6d727b51f4
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.17+aeb40ebef4
fabric-data-generation-api-v1: Fabric Data Generation API (v1) 11.5.2+26f09d40f4
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.50+44c9c860f4
fabric-entity-events-v1: Fabric Entity Events (v1) 1.5.17+10ce000ff4
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.6.1+4b6b93f0f4
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.56+df3654b3f4
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.36+3f657af2f4
fabric-item-api-v1: Fabric Item API (v1) 2.1.21+10ce000ff4
fabric-item-group-api-v1: Fabric Item Group API (v1) 3.0.10+8400c67ef4
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.35+504944c8f4
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.33+df3654b3f4
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.2.19+10ce000ff4
fabric-loot-api-v2: Fabric Loot API (v2) 1.1.32+10ce000ff4
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.1.36+9e7660c6f4
fabric-message-api-v1: Fabric Message API (v1) 5.1.5+53c11dadf4
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.1.44+10ce000ff4
fabric-model-loading-api-v1: Fabric Model Loading API (v1) 1.0.2+3a1ea2f1f4
fabric-models-v0: Fabric Models (v0) 0.4.1+a0255436f4
fabric-networking-api-v1: Fabric Networking API (v1) 1.3.6+ae9c4c6af4
fabric-networking-v0: Fabric Networking (v0) 0.3.46+df3654b3f4
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 7.1.1+d63b52eaf4
fabric-particles-v1: Fabric Particles (v1) 1.1.1+86d48884f4
fabric-recipe-api-v1: Fabric Recipe API (v1) 1.0.13+10ce000ff4
fabric-registry-sync-v0: Fabric Registry Sync (v0) 2.3.2+95ae8716f4
fabric-renderer-api-v1: Fabric Renderer API (v1) 2.4.2+90110d8df4
fabric-renderer-indigo: Fabric Renderer - Indigo 1.4.2+90110d8df4
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.42+df3654b3f4
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.32+10ce000ff4
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.0.25+10ce000ff4
fabric-rendering-v0: Fabric Rendering (v0) 1.1.45+df3654b3f4
fabric-rendering-v1: Fabric Rendering (v1) 2.1.5+10ce000ff4
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.3.3+10ce000ff4
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.11.7+8400c67ef4
fabric-screen-api-v1: Fabric Screen API (v1) 1.0.49+10ce000ff4
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.25+10ce000ff4
fabric-sound-api-v1: Fabric Sound API (v1) 1.0.11+10ce000ff4
fabric-transfer-api-v1: Fabric Transfer API (v1) 3.3.1+602c17c7f4
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 3.3.0+1b5f819af4
fabric-language-kotlin: Fabric Language Kotlin 1.11.0+kotlin.2.0.0
org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 2.0.0
org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 2.0.0
org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 2.0.0
org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 2.0.0
org_jetbrains_kotlinx_atomicfu-jvm: atomicfu-jvm 0.24.0
org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.8.1
org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.8.1
org_jetbrains_kotlinx_kotlinx-datetime-jvm: kotlinx-datetime-jvm 0.6.0
org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm: kotlinx-serialization-cbor-jvm 1.6.3
org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.6.3
org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.6.3
fabric-language-scala: Fabric Language Scala 1.1.0+scala.2.13.6
fabrication: Fabrication 3.4.14+1.19.4
lib39-deferral: Lib39 (Deferral) 1.5.0-pre2.2+1.19.3
fabricloader: Fabric Loader 0.15.11
mixinextras: MixinExtras 0.3.5
factory_api: Factory API 2.0
fallingleaves: Falling Leaves 1.15.6
fallingtree: FallingTree 3.13.1
firespreadtweaks: Fire Spread Tweaks 2.3
firstperson: FirstPerson 2.4.3
followersteleporttoo: Followers Teleport Too 2.1
forgeconfigapiport: Forge Config API Port 6.0.2
framework: Framework 0.6.16
org_javassist_javassist: javassist 3.29.2-GA
org_reflections_reflections: reflections 0.10.2
fzzy_core: Fzzy Core 0.2.7+1.19.4
gamma_shifter: Gamma Shifter 1.0.1+mc1.19.4
geckolib: Geckolib 4.2
com_eliotlash_mclib_mclib: mclib 20
geode_plus: Geode+ 1.1.9
paragon: Paragon 3.0.2
com_moandjiezana_toml_toml4j: toml4j 0.7.2
org_yaml_snakeyaml: snakeyaml 1.27
geodes: More Geodes 1.7+1.19.4
goblintraders: Goblin Traders 1.8.2
growable_ores: Skniro's GrowableOres 1.2.2-1.19.4
team_reborn_energy: Energy 3.0.0
handcrafted: Handcrafted 2.2.0
icarus: Icarus 1.15.1
iceberg: Iceberg 1.1.9.1
immersive_aircraft: Immersive Aircraft 0.7.9+1.19.4
org_mariuszgromada_math_mathparser_org-mxparser: MathParser.org-mXparser 5.2.1
immersive_armors: Immersive Armors 1.5.6+1.19.4
indium: Indium 1.0.19+mc1.19.4
inventorio: Inventorio 1.9.1
inventoryprofilesnext: Inventory Profiles Next 1.10.6
iris: Iris 1.6.6
io_github_douira_glsl-transformer: glsl-transformer 2.0.0-pre13
org_anarres_jcpp: jcpp 1.4.14
org_antlr_antlr4-runtime: antlr4-runtime 4.11.1
jade: Jade 10.4.0
jamlib: JamLib 0.6.1+1.19.4
java: OpenJDK 64-Bit Server VM 17
jeresources: Just Enough Resources 1.3.3.219
lambdynlights: LambDynamicLights 2.3.1+1.19.4
pride: Pride Lib 1.2.0+1.19.4
libipn: libIPN 3.0.2
lightoverlay: Light Overlay 7.0.3
litematica: Litematica 0.14.3
malilib: MaLiLib 0.15.4
mcwbridges: Macaw's Bridges 3.0.0
mcwfences: Macaw's Fences and Walls 1.1.1
mcwpaths: Macaw's Paths and Pavings 1.0.4
mcwwindows: Macaw's Windows 2.2.1
mes: Moog's End Structures 1.1-1.19.4-fabric
midnightlib: MidnightLib 1.3.0
minecraft: Minecraft 1.19.4
mineralchance: Mineral Chance 3.2
mishanguc: Mishang Urban Construction 1.2.7
mixtape: Mixtape 1.5.0
modmenu: Mod Menu 6.3.1
moonlight: Moonlight 1.19.4-2.4.16
more_chests: More Chests 2.0.0
moremobvariants: More Mob Variants 1.2.0.1
moretotems: More Totems 2.14.0
mythicmetals: Mythic Metals 0.18.1+1.19.4
additionalentityattributes: Additional Entity Attributes 1.2.2+1.19.4
notenoughanimations: NotEnoughAnimations 1.7.4
openblocks: Open Block Elevator Mod 0.0.3-1.19.4
org_jetbrains_annotations: annotations 23.0.0
owo: oωo 0.10.6+1.19.4
blue_endless_jankson: jankson 1.2.2
paintings: Paintings++ 10.4.0.0
patchouli: Patchouli 1.19.4-79.1-FABRIC
fiber: fiber 0.23.0-2
pehkui: Pehkui 3.7.5+1.14.4-1.20
kanos_config: Kanos Config 0.4.1+1.14.4-1.19.4
philipsruins: Philip`s Ruins 1.19.4
physicsmod: Physics Mod 2.12.5
pigpen: PigPen 13.0.1
pigsteel: Pigsteel Mod 1.8.3
plushies: Plushie Mod 1.2.1
polymorph: Polymorph 0.48.1+1.19.4
puzzleslib: Puzzles Lib 6.0.11
quarryplus: QuarryPlus 19.4.0
randomsheepcolours: Random Sheep Colours 3.1
reacharound: Reacharound 1.3.0
reborncore: Reborn Core 5.7.0
redstonepen: Redstone Pen 1.4.23
reeses-sodium-options: Reese's Sodium Options 1.6.3+mc1.19.4-build.90
replaymod: Replay Mod 1.19.4-2.6.13
repurposed_structures: Repurposed Structures 6.3.25+1.19.4-fabric
resourcefulconfig: Resourcefulconfig 1.2.0
resourcefullib: Resourceful Lib 1.3.6
com_teamresourceful_yabn: yabn 1.0.3
roughlyenoughitems: Roughly Enough Items 11.1.717
error_notifier: Error Notifier 1.0.9
runelic: Runelic 16.1.5
saplanting: Saplanting 1.2.6
searchables: Searchables 1.0.3
sheepconsistency: Sheep Consistency 1.0.4
shetiphiancore: ShetiPhianCore 1.3.12
shulkerboxtooltip: Shulker Box Tooltip 3.4.4+1.19.4
simplemagnets: Simple Magnets 1.1.11
skinlayers3d: 3d-Skin-Layers 1.6.6
sodium: Sodium 0.4.10+build.24
sodium-extra: Sodium Extra 0.4.18+mc1.19.4-build.100
caffeineconfig: CaffeineConfig 1.1.0+1.17
somanyenchantments: So Many Enchantments Mod 0.3.1
spawnermod: Enhanced Mob Spawners 1.2.4
spongesucc: SpongeSucc (Lava Sponge) 1.0.0-1.19.4
stacker: Stacker 3.1.0-1.19.4
stackrefill: Stack Refill 4.0
super_ore_block: Super Ore Block 2.0.0
supermartijn642configlib: SuperMartijn642's Config Lib 1.1.8+a
supermartijn642corelib: SuperMartijn642's Core Lib 1.1.17
survivalplus: SurvivalPlus 0.1.7b
tawct: Time & Wind Custom Ticker 1.4.7+1.19.4
techreborn: Tech Reborn 5.7.0
terrablender: TerraBlender 2.2.0.154
terrestria: Terrestria 5.2.7
biolith: Biolith 0.0.1-alpha.4
terraform-biome-remapper-api-v1: Terraform Biome Remapper API (v1) 6.1.3
terraform-config-api-v1: Terraform Config API (v1) 6.1.3
terraform-dirt-api-v1: Terraform Dirt API (v1) 6.1.3
terraform-shapes-api-v1: Terraform Shapes API (v1) 6.1.3
terraform-surfaces-api-v1: Terraform Surfaces API (v1) 6.1.3
terraform-tree-api-v1: Terraform Tree API (v1) 6.1.3
terraform-wood-api-v1: Terraform Wood API (v1) 6.1.3
terrestria-client: Terrestria: Client 5.2.7
terrestria-common: Terrestria: Common 5.2.7
terrestria-worldgen: Terrestria: World Generation 5.2.7
the_bumblezone: The Bumblezone - Fabric 6.7.21+1.19.4-fabric
fake-player-api: Fake Player API 0.6.0
noindium: No Indium? 1.1.0+1.19.4
thiccpackets: Extra Thicc Packets 1.17-1.19+
things: Things 0.3.0+1.19.4
toms_storage: Tom's Simple Storage Mod 1.5.11
toolstats: ToolStats 14.1.7
tooltipfix: ToolTip Fix 1.1.1-1.19.3
tradingpost: Trading Post 6.0.0
transparent: Transparent 6.1.3
trinkets: Trinkets 3.6.0
universal_ores: Universal Ores 1.5.1
upgradedshulkers: Upgraded Shulkers 1.1.3-1.19.4
shulkerutils: shulkerutils 1.0.4-1.19
usefulslime: Useful Slime 1.4.2
utilitybelt: Utility Belt 1.3.3+1.19.4
tutorial-lib: Tutorial Lib 1.1.2+1.19.4
veinmining: Vein Mining 1.1.3+1.19.4
villagersrespawn: Villagers Respawn 7
visuality: Visuality 0.7.0
visualworkbench: Visual Workbench 6.0.1
wandering_collector: Wandering Collector 1.2.1+mc1.19.4
coat: Coat 1.0.0-beta.20+mc1.19.4
tweed4_annotated: tweed4_annotated 1.3.1+mc1.19.4
tweed4_base: tweed4_base 1.7.1+mc1.19.4
tweed4_data: tweed4_data 1.2.1+mc1.19.4
tweed4_data_hjson: tweed4_data_hjson 1.1.1+mc1.19.4
tweed4_tailor_coat: tweed4_tailor_coat 1.1.3+mc1.19.4
tweed4_tailor_lang_json_descriptions: tweed4_tailor_lang_json_descriptions 1.1.0+mc1.19.4
tweed4_tailor_screen: tweed4_tailor_screen 1.1.4+mc1.19.4
wands: Building Wands 2.6.9-release
waveycapes: WaveyCapes 1.4.7
windchimes: Windchimes 1.2.2
wirelesschargers: Wireless Chargers 1.0.9+a
wirelessredstone: Wireless Redstone 1.19.4-1.1.0
wooltweaks: Wool Tweaks 3.1
worldedit: WorldEdit 7.2.14+6360-094b734
wormhole: Wormhole (Portals) 1.1.16
xaerominimap: Xaero's Minimap 24.2.0
xaeroworldmap: Xaero's World Map 1.38.8
xps: Xp Obelisk 0.4.9-r+1.19.4-Fabric
yet_another_config_lib_v3: YetAnotherConfigLib 3.1.1+1.19.4
com_twelvemonkeys_common_common-image: common-image 3.10.0-SNAPSHOT
com_twelvemonkeys_common_common-io: common-io 3.10.0-SNAPSHOT
com_twelvemonkeys_common_common-lang: common-lang 3.10.0-SNAPSHOT
com_twelvemonkeys_imageio_imageio-core: imageio-core 3.10.0-SNAPSHOT
com_twelvemonkeys_imageio_imageio-metadata: imageio-metadata 3.10.0-SNAPSHOT
com_twelvemonkeys_imageio_imageio-webp: imageio-webp 3.10.0-SNAPSHOT
yet_another_config_lib: YetAnotherConfigLib 2.5.1+1.19.4
yigd: You're in Grave Danger 1.6.0
zoomify: Zoomify 2.9.4
com_akuleshov7_ktoml-core-jvm: ktoml-core-jvm 0.4.1
dev_isxander_settxi_settxi-core: settxi-core 2.10.6
dev_isxander_settxi_settxi-gui: settxi-gui 2.10.6
dev_isxander_settxi_settxi-kotlinx-serialization: settxi-kotlinx-serialization 2.10.6
settxi-gui-yacl: Settxi Gui (YetAnotherConfigLib) 2.10.6
Loaded Shaderpack: ComplementaryReimagined_r2.3
Profile: Custom (+95 options changed by user)
NEC status: No NEC detected
Server Running: true
Player Count: 1 / 8; [class_3222['iPOTAT00'/432, l='ServerLevel[This is honestly]', x=-9967.15, y=53.00, z=-1568.91]]
Data Packs: vanilla, fabric, dimdoors:default, dimdoors:classic
Enabled Feature Flags: minecraft:vanilla
World Generation: Stable
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fabric'; Server brand changed to 'fabric'
Launched Version: fabric-loader-0.15.11-1.19.4

fixed in 0ea9511 / Icarus 1.15.2

This doesn't happen when I open my inventory, it happens right as the world starts to load

It's a crash caused by the creative inventory (even with no other mods installed), it just so happens that one of your mods touches that a bit earlier than when I tested with just icarus alone.