[1.17] Cannot find spawn biome

[RowanSkie]

Latest.log: https://paste.ee/p/3mFxZ crash log:

---- Minecraft Crash Report ----
// You're mean.

Time: 08/07/2021, 11:10 am
Description: Exception initializing level

java.lang.NoSuchMethodError: 'void net.minecraft.class_5873.<init>(net.minecraft.class_2794, net.minecraft.class_5539)'
    at com.bespectacled.modernbeta.world.gen.OldChunkGenerator.carve(OldChunkGenerator.java:161)
    at net.minecraft.world.chunk.ChunkStatus.method_16563(ChunkStatus:88)
    at net.minecraft.world.chunk.ChunkStatus$SimpleGenerationTask.doWork(ChunkStatus:275)
    at net.minecraft.world.chunk.ChunkStatus.runGenerationTask(ChunkStatus:231)
    at net.minecraft.server.world.ThreadedAnvilChunkStorage.method_17225(ThreadedAnvilChunkStorage:555)
    at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
    at net.minecraft.server.world.ThreadedAnvilChunkStorage.method_17224(ThreadedAnvilChunkStorage:549)
    at java.util.concurrent.CompletableFuture$UniCompose.tryFire(Unknown Source)
    at java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
    at net.minecraft.server.world.ChunkTaskPrioritySystem.method_17634(ChunkTaskPrioritySystem:58)
    at net.minecraft.util.thread.TaskExecutor.runNext(TaskExecutor:91)
    at net.minecraft.util.thread.TaskExecutor.runWhile(TaskExecutor:131)
    at net.minecraft.util.thread.TaskExecutor.run(TaskExecutor:99)
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(Unknown Source)
    at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
    at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
    at java.util.concurrent.ForkJoinPool.scan(Unknown Source)
    at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
    at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

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

-- Head --
Thread: Server thread
Stacktrace:
    at com.bespectacled.modernbeta.world.gen.OldChunkGenerator.method_12108(OldChunkGenerator.java:161)
    at net.minecraft.class_2806.method_16563(class_2806.java:88)
    at net.minecraft.class_2806$class_3768.doWork(class_2806.java:275)
    at net.minecraft.class_2806.method_12154(class_2806.java:231)
    at net.minecraft.class_3898.method_17225(class_3898.java:555)
    at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
    at net.minecraft.class_3898.method_17224(class_3898.java:549)
    at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(Unknown Source)
    at java.base/java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
    at net.minecraft.class_3900.method_17634(class_3900.java:58)
    at net.minecraft.class_3846.method_16907(class_3846.java:91)
    at net.minecraft.class_3846.method_16900(class_3846.java:131)
    at net.minecraft.class_3846.run(class_3846.java:99)

-- Affected level --
Details:
    All players: 0 total; []
    Chunk stats: 529
    Level dimension: minecraft:overworld
    Level spawn location: World: (8,64,8), Section: (at 8,0,8 in 0,4,0; chunk 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
    Level name: New World
    Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Known server brands: fabric
    Level was modded: true
    Level storage version: 0x04ABD - Anvil
Stacktrace:
    at net.minecraft.server.MinecraftServer.method_3786(MinecraftServer.java:405)
    at net.minecraft.server.MinecraftServer.method_3735(MinecraftServer.java:354)
    at net.minecraft.class_1132.method_3823(class_1132.java:71)
    at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:665)
    at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:274)
    at java.base/java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
    Minecraft Version: 1.17
    Minecraft Version ID: 1.17
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 16.0.1, AdoptOpenJDK
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), AdoptOpenJDK
    Memory: 4463457664 bytes (4256 MiB) / 7335837696 bytes (6996 MiB) up to 8589934592 bytes (8192 MiB)
    CPUs: 8
    Processor Vendor: GenuineIntel
    Processor Name: Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
    Identifier: Intel64 Family 6 Model 158 Stepping 9
    Microarchitecture: Kaby Lake
    Frequency (GHz): 4.20
    Number of physical packages: 1
    Number of physical CPUs: 4
    Number of logical CPUs: 8
    Graphics card #0 name: NVIDIA GeForce GTX 1080 Ti
    Graphics card #0 vendor: NVIDIA (0x10de)
    Graphics card #0 VRAM (MB): 4095.00
    Graphics card #0 deviceId: 0x1b06
    Graphics card #0 versionInfo: DriverVersion=30.0.14.7111
    Memory slot #0 capacity (MB): 8192.00
    Memory slot #0 clockSpeed (GHz): 2.40
    Memory slot #0 type: DDR4
    Memory slot #1 capacity (MB): 8192.00
    Memory slot #1 clockSpeed (GHz): 2.40
    Memory slot #1 type: DDR4
    Virtual memory max (MB): 28092.99
    Virtual memory used (MB): 19056.27
    Swap memory total (MB): 11776.00
    Swap memory used (MB): 606.05
    JVM Flags: 5 total; -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms640m -Xmx8192m
    Fabric Mods: 
        appleskin: AppleSkin mc1.17-2.0.0
        architectury: Architectury 2.0.8
        autopath: Automatic Path 1.4.3
        betterbeds: Better Beds 1.2.0
        betterf3: BetterF3 1.1.5
        bettermineshafts: YUNG's Better Mineshafts 1.17-1.0.0
        betternether: Better Nether 5.1.3
        betterstrongholds: YUNG's Better Strongholds 1.17-1.0
        blue_endless_jankson: jankson 1.2.1
        cavebiomes: Cave Biomes 0.6.3
        cleardespawn: Clear Despawn 1.17.1-fabric0.36.1-1.1.1
        cloth-basic-math: Cloth Basic Math 0.5.1
        cloth-config2: Cloth Config v4 5.0.34
        com_moandjiezana_toml_toml4j: toml4j 0.7.2
        craftpresence: CraftPresence 1.8.2
        crowdin-translate: CrowdinTranslate 1.3+1.17
        day_dream: Day Dream 1.0.2
        daylight_mobs_reborn: Daylight Mobs Reborn 1.2.2
        dehydration: Dehydration 1.1.6
        disable_custom_worlds_advice: Disable Custom Worlds Advice 1.3
        dynamicfps: Dynamic FPS 2.0.4
        dynmus: Dynamic Music 1.3.0
        fabric: Fabric API 0.36.0+1.17
        fabric-api-base: Fabric API Base 0.3.0+a02b446313
        fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.2.0+84310a227d
        fabric-biome-api-v1: Fabric Biome API (v1) 3.1.11+c345aea83d
        fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.5+a02b44633d
        fabric-command-api-v1: Fabric Command API (v1) 1.1.1+a02b44633d
        fabric-commands-v0: Fabric Commands (v0) 0.2.2+92519afa3d
        fabric-containers-v0: Fabric Containers (v0) 0.1.12+a02b44633d
        fabric-content-registries-v0: Fabric Content Registries (v0) 0.2.2+a02b44633d
        fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.5+be9da3103d
        fabric-dimensions-v1: Fabric Dimensions API (v1) 2.0.10+a02b44633d
        fabric-entity-events-v1: Fabric Entity Events (v1) 1.1.0+a02b44633d
        fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.9+a722d8c03d
        fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.1+92519afa3d
        fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.6+a02b44633d
        fabric-item-api-v1: Fabric Item API (v1) 1.2.4+a02b44633d
        fabric-item-groups-v0: Fabric Item Groups (v0) 0.2.10+b7ab61213d
        fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.4+a02b44633d
        fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.2+36b77c3e3d
        fabric-language-kotlin: Fabric Language Kotlin 1.6.2+kotlin.1.5.20
        fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.4.4+a02b44633d
        fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.4+a02b44633d
        fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.3+92519afa3d
        fabric-models-v0: Fabric Models (v0) 0.3.0+a02b44633d
        fabric-networking-api-v1: Fabric Networking API (v1) 1.0.11+b7ab61213d
        fabric-networking-blockentity-v0: Fabric Networking Block Entity (v0) 0.2.11+a02b44633d
        fabric-networking-v0: Fabric Networking (v0) 0.3.2+92519afa3d
        fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.10.9+b7ab61213d
        fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.3+a02b44633d
        fabric-particles-v1: Fabric Particles (v1) 0.2.4+a02b44633d
        fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.7.10+e2961fee3d
        fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.3+676f40fa3d
        fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.8+a02b44633d
        fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.0+a02b44633d
        fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.1.5+a02b44633d
        fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.13+a02b44633d
        fabric-rendering-v0: Fabric Rendering (v0) 1.1.2+92519afa3d
        fabric-rendering-v1: Fabric Rendering (v1) 1.6.0+a02b44633d
        fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.7+b7ab6121d5
        fabric-screen-api-v1: Fabric Screen API (v1) 1.0.4+198a96213d
        fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.8+a02b44633d
        fabric-structure-api-v1: Fabric Structure API (v1) 1.1.11+e36969833d
        fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.1.4+a02b44633d
        fabric-textures-v0: Fabric Textures (v0) 1.0.6+a02b44633d
        fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.2.12+b7ab61213d
        fabric-tree-chopper: Fabric Tree Chopper 0.7.0
        fabricloader: Fabric Loader 0.11.6
        fallingleaves: Falling Leaves 1.7.2+1.17
        fasttransferlib: Fast Transfer Lib 0.4.2
        fiber: fiber 0.23.0-2
        fiber2cloth: Fiber To Cloth 3.2.0
        gbfabrictools: GBfabrictools 1.3.4+1.17
        hdskins: HD Skins 6.5.0-beta.0.5+ce1b8bd
        hydrogen: Hydrogen 0.3
        imm_ptl_core: Immersive Portals Core 0.8
        immersive_portals: Immersive Portals 0.8
        indium: Indium 1.0.0+rev.820073e
        inventorysorter: Inventory Sorter 1.7.9-1.17
        iris: Iris 1.1.0+rev.7966919
        ironchests: Iron Chests for Fabric 1.0.4
        jankson: Jankson 3.0.1+j1.2.0
        java: OpenJDK 64-Bit Server VM 16
        kirin: Kirin UI 1.9.1
        kyrptconfig: Kytpt Config 1.1.10-1.17
        lambdabettergrass: LambdaBetterGrass 1.2.0+1.17
        lambdynlights: LambDynamicLights 2.0.1+1.17
        lazydfu: LazyDFU 0.1.2
        libgui: LibGui 4.0.0+1.17
        libninepatch: LibNinePatch 1.1.0
        lithium: Lithium 0.7.3
        mavm: More Axolotl Variants Mod 1.0.2b
        megane: megane 5.0.0
        megane-base: megane-base 5.0.0
        megane-fast-transfer-lib: megane-fast-transfer-lib 5.0.0+0.4.2
        megane-runtime: megane-runtime 5.0.0
        megane-team-reborn-energy: megane-team-reborn-energy 5.0.0+0.1.1
        megane-vanilla: megane-vanilla 5.0.0+1.17
        megane-wireless-networks: megane-wireless-networks 5.0.0+1.1.1
        midnightlib: MidnightLib 0.2.2
        minecraft: Minecraft 1.17
        modern_beta: Modern Beta Fabric 2.1.0-1.17.1
        modmenu: Mod Menu 2.0.2
        mostructures: Mo' Structures 1.2.1-1.17
        nethermap: Better Nether Map 1.3.0
        notenoughcrashes: Not Enough Crashes 3.3.1+1.17
        omega-config: OmegaConfig 1.0.8
        org_apache_httpcomponents_httpmime: httpmime 4.3.2
        org_aperlambda_lambdajcommon: lambdajcommon 1.8.1
        org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 1.5.20
        org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 1.5.20
        org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 1.5.20
        org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 1.5.20
        org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.5.0
        org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.5.0
        org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.2.1
        org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.2.1
        pehkui: Pehkui 2.2.1+1.14.4-1.17
        q_misc_util: A Miscellaneous Utility Library from qouteall 0.8
        repurposed_structures: Repurposed Structures 2.0.6+1.17.1
        roughlyenoughitems: Roughly Enough Items 6.0.251-alpha
        seamless_loading_screen: Seamless Loading Screen 1.3.5+1.17
        seasons: Fabric Seasons 1.2.2-BETA+1.17
        sodium: Sodium 0.3.0+IRIS1-rev.6938090-dirty
        spruceui: SpruceUI 3.2.0+1.17
        stoneholm: Stoneholm 1.3
        team_reborn_energy: Energy 0.1.1
        terra: Terra 5.4.1-BETA+b85880fc
        villagernames: Villager Names 2.0.0
        visualoverhaul: VisualOverhaul 3.3.0
        wirelessnetworks: Wireless Networks 1.1.1
        wthit: wthit 3.6.1
        yungsapi: YUNG's API 1.17-Fabric-11
    Player Count: 0 / 8; []
    Data Packs: vanilla (incompatible), Fabric Mods
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fabric'
    Suspected Mods: Modern Beta Fabric (modern_beta)

[b3spectacled]

v2.1.0-1.17.1 of the mod is only for Minecraft 1.17.1. Please update to that version of the game, or use v2.0.0-1.17.

EDIT: Also want to add that this mod conflicts with Hydrogen, due to the way this mod currently handles assigning ocean biomes to bodies of water. You may experience crashes due to that as well. You can either toggle the generateOceans option to off or remove Hydrogen.