Seems to be same issue, only when Immersive Portals is installed.

Please provide a crash log :)

[12:57:20] [main/INFO]: Loading Minecraft 1.18.1 with Fabric Loader 0.12.12
[12:57:20] [main/INFO]: Loading 63 mods:
- adventurez 1.4.6
- cloth-api 2.0.54
- cloth-basic-math 0.6.0 via cloth-config
- cloth-client-events-v0 2.0.54 via cloth-api
- cloth-common-events-v1 2.0.54 via cloth-api
- cloth-config 6.1.48
- cloth-datagen-api-v1 2.0.54 via cloth-api
- cloth-scissors-api-v1 2.0.54 via cloth-api
- cloth-utils-v1 2.0.54 via cloth-api
- fabric 0.45.0+1.18
- fabric-api-base 0.4.1+b4f4f6cd65 via fabric
- fabric-api-lookup-api-v1 1.5.0+17be577f65 via fabric
- fabric-biome-api-v1 6.0.1+ded849a965 via fabric
- fabric-blockrenderlayer-v1 1.1.9+3ac43d9565 via fabric
- fabric-command-api-v1 1.1.6+3ac43d9565 via fabric
- fabric-commands-v0 0.2.5+b4f4f6cd65 via fabric
- fabric-containers-v0 0.1.18+d154e2c665 via fabric
- fabric-content-registries-v0 0.4.5+6f53a73d65 via fabric
- fabric-crash-report-info-v1 0.1.8+3ac43d9565 via fabric
- fabric-dimensions-v1 2.1.7+43d2957165 via fabric
- fabric-entity-events-v1 1.4.5+6b21378a65 via fabric
- fabric-events-interaction-v0 0.4.16+bfa23f1765 via fabric
- fabric-events-lifecycle-v0 0.2.6+b4f4f6cd65 via fabric
- fabric-game-rule-api-v1 1.0.10+3ac43d9565 via fabric
- fabric-item-api-v1 1.3.0+691a79b565 via fabric
- fabric-item-groups-v0 0.3.3+3ac43d9565 via fabric
- fabric-key-binding-api-v1 1.0.8+c8aba2f365 via fabric
- fabric-keybindings-v0 0.2.6+b4f4f6cd65 via fabric
- fabric-lifecycle-events-v1 1.4.10+c15ca33565 via fabric
- fabric-loot-tables-v1 1.0.8+3ac43d9565 via fabric
- fabric-mining-level-api-v1 1.0.3+3ac43d9565 via fabric
- fabric-mining-levels-v0 0.1.7+b4f4f6cd65 via fabric
- fabric-models-v0 0.3.3+3ac43d9565 via fabric
- fabric-networking-api-v1 1.0.18+3ac43d9565 via fabric
- fabric-networking-v0 0.3.5+b4f4f6cd65 via fabric
- fabric-object-builder-api-v1 1.11.0+3b82842e65 via fabric
- fabric-object-builders-v0 0.7.8+3ac43d9565 via fabric
- fabric-particles-v1 0.2.9+526dc1ac65 via fabric
- fabric-registry-sync-v0 0.8.6+533be9ba65 via fabric
- fabric-renderer-api-v1 0.4.9+3ac43d9565 via fabric
- fabric-renderer-indigo 0.4.12+3ac43d9565 via fabric
- fabric-renderer-registries-v1 3.2.7+b4f4f6cd65 via fabric
- fabric-rendering-data-attachment-v1 0.3.4+7242e9d765 via fabric
- fabric-rendering-fluids-v1 0.1.18+3ac43d9565 via fabric
- fabric-rendering-v0 1.1.9+b4f4f6cd65 via fabric
- fabric-rendering-v1 1.10.3+6b21378a65 via fabric
- fabric-resource-loader-v0 0.4.11+3ac43d9565 via fabric
- fabric-screen-api-v1 1.0.7+3ac43d9565 via fabric
- fabric-screen-handler-api-v1 1.1.11+3ac43d9565 via fabric
- fabric-structure-api-v1 2.0.8+295197a765 via fabric
- fabric-tag-extensions-v0 1.2.5+3ac43d9565 via fabric
- fabric-textures-v0 1.0.9+3ac43d9565 via fabric
- fabric-tool-attribute-api-v1 1.3.4+7de09f5565 via fabric
- fabric-transfer-api-v1 1.5.6+b4f4f6cd65 via fabric
- fabricloader 0.12.12
- fiber 0.23.0-2 via patchouli
- imm_ptl_core 1.1.8 via immersive_portals
- immersive_portals 1.1.8
- java 17
- minecraft 1.18.1
- patchouli 1.18.1-63-FABRIC
- q_misc_util 1.1.8 via immersive_portals
- voidz 1.0.5
[12:57:23] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Users/Rotok%20Eralil/AppData/Roaming/.minecraft/libraries/net/fabricmc/sponge-mixin/0.10.7+mixin.0.8.4/sponge-mixin-0.10.7+mixin.0.8.4.jar Service=Knot/Fabric Env=CLIENT
[12:57:23] [main/INFO]: Compatibility level set to JAVA_16
[12:57:23] [main/INFO]: Compatibility level set to JAVA_17
[12:57:27] [main/WARN]: @Inject(@at("INVOKE")) Shift.BY=3 on fabric-lifecycle-events-v1.mixins.json:client.WorldChunkMixin::handler$zfp000$onLoadBlockEntity exceeds the maximum allowed value: 0. Increase the value of maxShiftBy to suppress this warning.
[12:57:28] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[12:57:29] [Render thread/INFO]: Setting user: Rotok_Eralil
[12:57:29] [Render thread/INFO]: Immersive Portals Mod Initializing
[12:57:29] [Render thread/INFO]: Dimensional Threading is not present
[12:57:29] [Render thread/INFO]: Pehkui is not present
[12:57:29] [Render thread/INFO]: Gravity Changer is not present
[12:57:30] [Render thread/INFO]: [Indigo] Registering Indigo renderer!
[12:57:30] [Render thread/INFO]: [Indigo] Compatibility mode enabled.
[12:57:30] [Render thread/INFO]: IP Config Applied
[12:57:30] [Render thread/INFO]: Successfully initialized command /immersive_portals_debug
[12:57:30] [Render thread/INFO]: Sodium is not present
[12:57:30] [Render thread/INFO]: Iris is not present
[12:57:31] [Render thread/INFO]: Backend library: LWJGL version 3.2.2 build 10
[12:57:33] [Render thread/INFO]: Narrator library for x64 successfully loaded
[12:57:34] [Render thread/INFO]: Shader Transform Skipping blit_screen
[12:57:34] [Render thread/INFO]: Shader Transform Skipping blit_screen
[12:57:34] [Render thread/INFO]: Shader Transform Skipping blit_screen
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_color_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping position_tex_color
[12:57:34] [Render thread/INFO]: Shader Transform Skipping rendertype_text
[12:57:34] [Render thread/INFO]: Shader Transform Skipping rendertype_text
[12:57:34] [Render thread/INFO]: Shader Transform Skipping rendertype_text
[12:57:34] [Render thread/INFO]: Reloading ResourceManager: Default, Fabric Mods (AdventureZ, Cloth Config v6, Fabric API, Fabric API Base, Fabric API Lookup API (v1), Fabric Biome API (v1), Fabric BlockRenderLayer Registration (v1), Fabric Command API (v1), Fabric Commands (v0), Fabric Containers (v0), Fabric Content Registries (v0), Fabric Crash Report Info (v1), Fabric Dimensions API (v1), Fabric Entity Events (v1), Fabric Events Interaction (v0), Fabric Events Lifecycle (v0), Fabric Game Rule API (v1), Fabric Item API (v1), Fabric Item Groups (v0), Fabric Key Binding API (v1), Fabric Key Bindings (v0), Fabric Lifecycle Events (v1), Fabric Loot Tables (v1), Fabric Mining Level API (v1), Fabric Mining Levels (v0), Fabric Models (v0), Fabric Networking API (v1), Fabric Networking (v0), Fabric Object Builder API (v1), Fabric Object Builders (v0), Fabric Particles (v1), Fabric Registry Sync (v0), Fabric Renderer API (v1), Fabric Renderer - Indigo, Fabric Renderer Registries (v1), Fabric Rendering Data Attachment (v1), Fabric Rendering Fluids (v1), Fabric Rendering (v0), Fabric Rendering (v1), Fabric Resource Loader (v0), Fabric Screen API (v1), Fabric Screen Handler API (v1), Fabric Structure API (v1), Fabric Tag Extensions (v0), Fabric Textures (v0), Fabric Tool Attribute API (v1), Fabric Transfer API (v1), Fabric Loader, Immersive Portals Core, Immersive Portals, Patchouli, QMiscUtil, VoidZ)
[12:57:34] [Render thread/INFO]: Loaded Shader Code Transformation
[12:57:37] [Render thread/INFO]: OpenAL initialized on device OpenAL Soft on Headphones (Astro MixAmp Pro Game)
[12:57:37] [Render thread/INFO]: Sound engine started
[12:57:37] [Render thread/INFO]: Created: 1024x1024x4 minecraft:textures/atlas/blocks.png-atlas
[12:57:37] [Render thread/INFO]: Created: 256x128x4 minecraft:textures/atlas/signs.png-atlas
[12:57:37] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/banner_patterns.png-atlas
[12:57:37] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/shield_patterns.png-atlas
[12:57:37] [Render thread/INFO]: Created: 256x256x4 minecraft:textures/atlas/chest.png-atlas
[12:57:37] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas
[12:57:37] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas
[12:57:38] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas
[12:57:38] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas
[12:57:38] [Render thread/INFO]: Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas
[12:57:38] [Render thread/INFO]: BookContentResourceListenerLoader preloaded 39 jsons
[12:57:38] [Render thread/INFO]: Not reloading resource pack-based books as client world is missing
[12:57:58] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:57:58] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:57:58] [Render thread/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:57:58] [Render thread/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:57:58] [Render thread/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:57:58] [Render thread/INFO]: Reloading ResourceManager: Default, Fabric Mods (AdventureZ, Fabric Tool Attribute API (v1), Immersive Portals, Patchouli, VoidZ), Repurposed_Structures-Farmers_Delight_v2.zip, Repurposed_Structures-More_Villagers_v3.zip
[12:57:58] [Render thread/INFO]: Loaded 7 recipes
[12:57:58] [Render thread/INFO]: Loaded 1162 advancements
[12:57:58] [Render thread/INFO]: Applied 31 biome modifications to 28 of 61 new biomes in 5.410 ms
[12:57:58] [Render thread/WARN]: Adding adventurez:withering to saved/remote registry.
[12:57:58] [Render thread/WARN]: Adding adventurez:fame to saved/remote registry.
[12:57:58] [Render thread/WARN]: Adding adventurez:blackstoned_heart to saved/remote registry.
[12:57:58] [Render thread/WARN]: drinkbeer:drunk_frost_walker missing from registry, but requested!
[12:57:58] [Render thread/WARN]: drinkbeer:drunk missing from registry, but requested!
[12:57:58] [Render thread/WARN]: farmersdelight:nourished missing from registry, but requested!
[12:57:58] [Render thread/WARN]: farmersdelight:comfort missing from registry, but requested!
[12:57:58] [Render thread/WARN]: things:momentum missing from registry, but requested!
[12:57:58] [Render thread/INFO]: [fabric-registry-sync] Loaded registry data [file 1/4]
[12:58:02] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:58:02] [Render thread/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:58:02] [Render thread/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:58:02] [Render thread/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[12:58:02] [Render thread/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[12:58:02] [Render thread/INFO]: Reloading ResourceManager: Default, Fabric Mods (AdventureZ, Fabric Tool Attribute API (v1), Immersive Portals, Patchouli, VoidZ), Repurposed_Structures-Farmers_Delight_v2.zip, Repurposed_Structures-More_Villagers_v3.zip
[12:58:02] [Render thread/INFO]: Loaded 7 recipes
[12:58:02] [Render thread/INFO]: Loaded 1162 advancements
[12:58:02] [Render thread/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[12:58:02] [Server thread/INFO]: Starting integrated minecraft server version 1.18.1
[12:58:02] [Server thread/INFO]: Generating keypair
[12:58:06] [Server thread/INFO]: Immersive Portals' Dimension Id Record File Does Not Exist
[12:58:06] [Server thread/INFO]: Immersive Portals' dimension id record is missing
[12:58:06] [Server thread/INFO]: Dimension Id Record is Missing
[12:58:06] [Server thread/INFO]: Start Completing Dimension Id Record
[12:58:06] [Server thread/INFO]: Before:

[12:58:06] [Server thread/INFO]: Server Loaded Dimensions:
immersive_portals:alternate1
immersive_portals:alternate2
immersive_portals:alternate3
immersive_portals:alternate4
immersive_portals:alternate5
minecraft:overworld
minecraft:the_end
minecraft:the_nether
voidz:void

[12:58:06] [Server thread/INFO]: After:
minecraft:overworld -> 0
minecraft:the_nether -> -1
minecraft:the_end -> 1
immersive_portals:alternate1 -> 2
immersive_portals:alternate2 -> 3
immersive_portals:alternate3 -> 4
immersive_portals:alternate4 -> 5
immersive_portals:alternate5 -> 6
voidz:void -> 7
[12:58:06] [Server thread/INFO]: Dimension Id Info Saved to File
[12:58:06] [Server thread/INFO]: Global portal storage initialized minecraft:overworld
[12:58:06] [Server thread/INFO]: Bedrock Replacement minecraft:overworld null
[12:58:06] [Server thread/INFO]: Global portal storage initialized minecraft:the_nether
[12:58:06] [Server thread/INFO]: Bedrock Replacement minecraft:the_nether null
[12:58:06] [Server thread/INFO]: Global portal storage initialized minecraft:the_end
[12:58:06] [Server thread/INFO]: Bedrock Replacement minecraft:the_end null
[12:58:06] [Server thread/INFO]: Global portal storage initialized voidz:void
[12:58:06] [Server thread/INFO]: Bedrock Replacement voidz:void null
[12:58:06] [Server thread/INFO]: Global portal storage initialized immersive_portals:alternate1
[12:58:06] [Server thread/INFO]: Bedrock Replacement immersive_portals:alternate1 null
[12:58:06] [Server thread/INFO]: Global portal storage initialized immersive_portals:alternate2
[12:58:06] [Server thread/INFO]: Bedrock Replacement immersive_portals:alternate2 null
[12:58:06] [Server thread/INFO]: Global portal storage initialized immersive_portals:alternate3
[12:58:06] [Server thread/INFO]: Bedrock Replacement immersive_portals:alternate3 null
[12:58:06] [Server thread/INFO]: Global portal storage initialized immersive_portals:alternate4
[12:58:06] [Server thread/INFO]: Bedrock Replacement immersive_portals:alternate4 null
[12:58:06] [Server thread/INFO]: Global portal storage initialized immersive_portals:alternate5
[12:58:06] [Server thread/INFO]: Bedrock Replacement immersive_portals:alternate5 null
[12:58:06] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld
[12:58:06] [Render thread/INFO]: Preparing spawn area: 0%
[12:58:06] [Render thread/INFO]: Preparing spawn area: 0%
[12:58:07] [Render thread/INFO]: Preparing spawn area: 0%
[12:58:07] [Render thread/INFO]: Preparing spawn area: 0%
[12:58:08] [Render thread/INFO]: Preparing spawn area: 2%
[12:58:08] [Render thread/INFO]: Preparing spawn area: 4%
[12:58:09] [Render thread/INFO]: Preparing spawn area: 5%
[12:58:09] [Render thread/INFO]: Preparing spawn area: 9%
[12:58:10] [Render thread/INFO]: Preparing spawn area: 12%
[12:58:10] [Render thread/INFO]: Preparing spawn area: 15%
[12:58:11] [Render thread/INFO]: Preparing spawn area: 19%
[12:58:11] [Render thread/INFO]: Preparing spawn area: 22%
[12:58:12] [Render thread/INFO]: Preparing spawn area: 27%
[12:58:12] [Render thread/INFO]: Preparing spawn area: 31%
[12:58:13] [Render thread/INFO]: Preparing spawn area: 35%
[12:58:13] [Render thread/INFO]: Preparing spawn area: 38%
[12:58:14] [Render thread/INFO]: Preparing spawn area: 43%
[12:58:14] [Render thread/INFO]: Preparing spawn area: 46%
[12:58:15] [Render thread/INFO]: Preparing spawn area: 51%
[12:58:15] [Render thread/INFO]: Preparing spawn area: 55%
[12:58:16] [Render thread/INFO]: Preparing spawn area: 59%
[12:58:16] [Render thread/INFO]: Preparing spawn area: 64%
[12:58:17] [Render thread/INFO]: Preparing spawn area: 68%
[12:58:17] [Render thread/INFO]: Preparing spawn area: 72%
[12:58:18] [Render thread/INFO]: Preparing spawn area: 77%
[12:58:18] [Render thread/INFO]: Preparing spawn area: 82%
[12:58:19] [Render thread/INFO]: Preparing spawn area: 86%
[12:58:19] [Render thread/INFO]: Preparing spawn area: 90%
[12:58:20] [Render thread/INFO]: Preparing spawn area: 95%
[12:58:20] [Render thread/INFO]: Preparing spawn area: 99%
[12:58:20] [Server thread/INFO]: Loading custom portal gen
[12:58:20] [Render thread/INFO]: Time elapsed: 14532 ms
[12:58:20] [Server thread/INFO]: Changing view distance to 18, from 10
[12:58:20] [Server thread/INFO]: Changing simulation distance to 12, from 0
[12:58:21] [Server thread/INFO]: Rotok_Eralil[local:E:b1c21778] logged in with entity id 265 at (24.5, 72.0, 33.5)
[12:58:21] [Server thread/INFO]: Rotok_Eralil joined the game
[12:58:21] [Netty Local Client IO #0/INFO]: Received Dimension Type Sync
[12:58:21] [Netty Local Client IO #0/INFO]:
immersive_portals:alternate1 -> immersive_portals:surface_type
immersive_portals:alternate4 -> immersive_portals:surface_type
immersive_portals:alternate5 -> immersive_portals:surface_type
minecraft:the_end -> minecraft:the_end
immersive_portals:alternate3 -> immersive_portals:surface_type
immersive_portals:alternate2 -> immersive_portals:surface_type
minecraft:the_nether -> minecraft:the_nether
voidz:void -> voidz:void_type
minecraft:overworld -> minecraft:overworld

[12:58:21] [Netty Local Client IO #0/INFO]: Received Dimension Int Id Sync
[12:58:21] [Netty Local Client IO #0/INFO]:
voidz:void -> 7
minecraft:overworld -> 0
immersive_portals:alternate1 -> 2
immersive_portals:alternate2 -> 3
minecraft:the_nether -> -1
immersive_portals:alternate3 -> 4
immersive_portals:alternate4 -> 5
minecraft:the_end -> 1
immersive_portals:alternate5 -> 6
[12:58:21] [Render thread/INFO]: WorldRenderer reloaded minecraft:overworld
[12:58:21] [Render thread/INFO]: Loaded 0 advancements
[12:58:32] [Render thread/INFO]: [CHAT] You are using a preview version of Immersive Portals mod which is not yet stable. Report issues:https://github.com/qouteall/ImmersivePortalsMod/issues
[12:58:32] [Render thread/INFO]: Re-processed riding packet
[12:58:43] [Server thread/INFO]: Rotok_Eralil has made the advancement [Ice Bucket Challenge]
[12:58:43] [Render thread/INFO]: [CHAT] Rotok_Eralil has made the advancement [Ice Bucket Challenge]
[12:58:43] [Render thread/INFO]: Loaded 12 advancements
[12:59:00] [Render thread/WARN]: Unable to play empty soundEvent: minecraft:entity.salmon.ambient
[12:59:07] [Server thread/INFO]: Portal Generation Attempted minecraft:overworld 24 73 27
[12:59:09] [Server thread/INFO]: Cannot Find Portal Placement on Ground with 6 Spacing
[12:59:09] [Server thread/INFO]: Generated Portal On Ground
[12:59:09] [Render thread/INFO]: WorldRenderer reloaded minecraft:the_nether
[12:59:09] [Render thread/INFO]: Client World Created minecraft:the_nether
[12:59:17] [Server thread/FATAL]: Error executing task on Chunk source main thread executor for minecraft:the_nether
net.minecraft.class_148: Feature placement
at net.minecraft.class_3898.method_39934(class_3898.java:619) ~[client-intermediary.jar:?]
at net.minecraft.class_1255.method_18859(class_1255.java:151) ~[client-intermediary.jar:?]
at net.minecraft.class_3215$class_4212.method_18859(class_3215.java:552) ~[client-intermediary.jar:?]
at net.minecraft.class_1255.method_16075(class_1255.java:125) ~[client-intermediary.jar:?]
at net.minecraft.class_3215$class_4212.method_16075(class_3215.java:561) ~[client-intermediary.jar:?]
at net.minecraft.class_3215.method_19492(class_3215.java:282) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:768) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16075(MinecraftServer.java:756) ~[client-intermediary.jar:?]
at net.minecraft.class_1255.method_18857(class_1255.java:134) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:741) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:688) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:270) ~[client-intermediary.jar:?]
at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.IllegalArgumentException: Maybe a mod is trying to add entity in a non-server thread. This is probably not IP's issue
at org.apache.commons.lang3.Validate.isTrue(Validate.java:158) ~[commons-lang3-3.12.0.jar:3.12.0]
at qouteall.imm_ptl.core.network.IPCommonNetwork.withForceRedirect(IPCommonNetwork.java:25) ~[imm_ptl_core-1.1.8-acc503312511a8e9.jar:?]
at net.minecraft.class_3231.method_18760(class_3231.java:1065) ~[client-intermediary.jar:?]
at net.minecraft.class_3898$class_3208.updateEntityTrackingStatus(class_3898.java:2048) ~[client-intermediary.jar:?]
at net.minecraft.class_3898$class_3208.method_18729(class_3898.java:2011) ~[client-intermediary.jar:?]
at net.minecraft.class_3898.method_18701(class_3898.java:1111) ~[client-intermediary.jar:?]
at net.minecraft.class_3215.method_18755(class_3215.java:476) ~[client-intermediary.jar:?]
at net.minecraft.class_3218$class_5526.method_31436(class_3218.java:1504) ~[client-intermediary.jar:?]
at net.minecraft.class_3218$class_5526.method_31798(class_3218.java:1482) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31847(class_5579.java:210) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31820(class_5579.java:180) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31818(class_5579.java:161) ~[client-intermediary.jar:?]
at net.minecraft.class_3218.method_14175(class_3218.java:852) ~[client-intermediary.jar:?]
at net.minecraft.class_3218.method_8649(class_3218.java:803) ~[client-intermediary.jar:?]
at net.adventurez.entity.BlazeGuardianEntity.(BlazeGuardianEntity.java:75) ~[adventurez-1.4.6.jar:?]
at net.minecraft.class_1299.method_5883(class_1299.java:475) ~[client-intermediary.jar:?]
at net.minecraft.class_3390$class_3402.handler$zzp000$generateMixin(class_3390.java:826) ~[client-intermediary.jar:?]
at net.minecraft.class_3390$class_3402.method_14931(class_3390.java:730) ~[client-intermediary.jar:?]
at net.minecraft.class_3449.method_14974(class_3449.java:62) ~[client-intermediary.jar:?]
at net.minecraft.class_2794.method_38265(class_2794.java:279) ~[client-intermediary.jar:?]
at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:422) ~[guava-31.0.1-jre.jar:?]
at net.minecraft.class_2794.method_12102(class_2794.java:278) ~[client-intermediary.jar:?]
at net.minecraft.class_2806.method_20613(class_2806.java:146) ~[client-intermediary.jar:?]
at net.minecraft.class_2806.method_12154(class_2806.java:289) ~[client-intermediary.jar:?]
at net.minecraft.class_3898.method_17225(class_3898.java:605) ~[client-intermediary.jar:?]
at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[datafixerupper-4.0.26.jar:?]
at net.minecraft.class_3898.method_17224(class_3898.java:599) ~[client-intermediary.jar:?]
at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150) ~[?:?]
at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482) ~[?:?]
at net.minecraft.class_3900.method_17634(class_3900.java:58) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.method_16907(class_3846.java:91) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.method_16900(class_3846.java:146) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.run(class_3846.java:102) ~[client-intermediary.jar:?]
at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395) ~[?:?]
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?]
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?]
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?]
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?]
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?]
[12:59:17] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.class_148: Feature placement
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:883) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:823) ~[client-intermediary.jar:?]
at net.minecraft.class_1132.method_3748(class_1132.java:99) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:684) ~[client-intermediary.jar:?]
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:270) ~[client-intermediary.jar:?]
at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.lang.IllegalArgumentException: Maybe a mod is trying to add entity in a non-server thread. This is probably not IP's issue
at org.apache.commons.lang3.Validate.isTrue(Validate.java:158) ~[commons-lang3-3.12.0.jar:3.12.0]
at qouteall.imm_ptl.core.network.IPCommonNetwork.withForceRedirect(IPCommonNetwork.java:25) ~[imm_ptl_core-1.1.8-acc503312511a8e9.jar:?]
at net.minecraft.class_3231.method_18760(class_3231.java:1065) ~[client-intermediary.jar:?]
at net.minecraft.class_3898$class_3208.updateEntityTrackingStatus(class_3898.java:2048) ~[client-intermediary.jar:?]
at net.minecraft.class_3898$class_3208.method_18729(class_3898.java:2011) ~[client-intermediary.jar:?]
at net.minecraft.class_3898.method_18701(class_3898.java:1111) ~[client-intermediary.jar:?]
at net.minecraft.class_3215.method_18755(class_3215.java:476) ~[client-intermediary.jar:?]
at net.minecraft.class_3218$class_5526.method_31436(class_3218.java:1504) ~[client-intermediary.jar:?]
at net.minecraft.class_3218$class_5526.method_31798(class_3218.java:1482) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31847(class_5579.java:210) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31820(class_5579.java:180) ~[client-intermediary.jar:?]
at net.minecraft.class_5579.method_31818(class_5579.java:161) ~[client-intermediary.jar:?]
at net.minecraft.class_3218.method_14175(class_3218.java:852) ~[client-intermediary.jar:?]
at net.minecraft.class_3218.method_8649(class_3218.java:803) ~[client-intermediary.jar:?]
at net.adventurez.entity.BlazeGuardianEntity.(BlazeGuardianEntity.java:75) ~[adventurez-1.4.6.jar:?]
at net.minecraft.class_1299.method_5883(class_1299.java:475) ~[client-intermediary.jar:?]
at net.minecraft.class_3390$class_3402.handler$zzp000$generateMixin(class_3390.java:826) ~[client-intermediary.jar:?]
at net.minecraft.class_3390$class_3402.method_14931(class_3390.java:730) ~[client-intermediary.jar:?]
at net.minecraft.class_3449.method_14974(class_3449.java:62) ~[client-intermediary.jar:?]
at net.minecraft.class_2794.method_38265(class_2794.java:279) ~[client-intermediary.jar:?]
at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:422) ~[guava-31.0.1-jre.jar:?]
at net.minecraft.class_2794.method_12102(class_2794.java:278) ~[client-intermediary.jar:?]
at net.minecraft.class_2806.method_20613(class_2806.java:146) ~[client-intermediary.jar:?]
at net.minecraft.class_2806.method_12154(class_2806.java:289) ~[client-intermediary.jar:?]
at net.minecraft.class_3898.method_17225(class_3898.java:605) ~[client-intermediary.jar:?]
at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[datafixerupper-4.0.26.jar:?]
at net.minecraft.class_3898.method_17224(class_3898.java:599) ~[client-intermediary.jar:?]
at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150) ~[?:?]
at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482) ~[?:?]
at net.minecraft.class_3900.method_17634(class_3900.java:58) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.method_16907(class_3846.java:91) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.method_16900(class_3846.java:146) ~[client-intermediary.jar:?]
at net.minecraft.class_3846.run(class_3846.java:102) ~[client-intermediary.jar:?]
at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395) ~[?:?]
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?]
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?]
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?]
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?]
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?]
[12:59:17] [Server thread/ERROR]: This crash report has been saved to: C:\Users\Rotok Eralil\AppData\Roaming.minecraft\crash-reports\crash-2022-01-04_12.59.17-server.txt
[12:59:17] [Server thread/INFO]: Stopping server
[12:59:17] [Server thread/INFO]: Saving players
[12:59:17] [Server thread/INFO]: Rotok_Eralil lost connection: Disconnected
[12:59:17] [Server thread/INFO]: Rotok_Eralil left the game

This is bad. Reference #58

adventurez-1.4.7.zip
Could you test this?

Crashed again.
Funny thing is, the advancements notification window in the corner didnt freeze; as it was still up when everything locked up, I thought it would stay frozen. But it smoothly slide over like normal.
latest Fresh world, created nether portal, ~20 seconds crashes.log
latest logging back into crashed world.log

adventurez-1.4.7.zip
I changed the spawn condition, it should work with this but pls test if the guardian spawns next to a fortress spawner

Sounds good

Looks good, I'm unsure of the spawn behavior of them, but there was a single guardian that naturally spawned next to a blaze spawner, and I used a spawn egg to spawn a handful more after.

latest no crash AdZ_ImP.log

Alright added fixed with 959e8b3