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Serene Seasons Gen Fix

Serene Seasons Gen Fix

MOD
Fixes server crashes when generating new chunks caused by serene seasons.
by Cat_Master543
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3,993 downloads
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Updated Oct 14, 2026
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Server Utility Utility & QoL
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What does this mod do?

This mod adds one mixin that bypasses a certain chunk in serene seasons code that uses a known problematic method, thus preventing server crashes.

Usually the error in server log will look something like this:

[Server thread/ERROR] [net.minecraft.util.thread.BlockableEventLoop/FATAL]: Error executing task on Chunk source main thread executor for minecraft:overworld
net.minecraft.ReportedException: Exception generating new chunk
    at TRANSFORMER...
...at java.base/java.lang.Thread.run(Thread.java:1474) [?:?]
Caused by: java.lang.IllegalStateException: Requested chunk unavailable during world generation
    at TRANSFORMER/[email protected]/net.minecraft.server.level.WorldGenRegion.getChunk(WorldGenRegion.java:129) ~[server-1.21.1-20240808.144430-srg.jar%23195!/:?]
    at TRANSFORMER/[email protected]/net.minecraft.world.level.LevelReader.getNoiseBiome(LevelReader.java:59) ~[server-1.21.1-20240808.144430-srg.jar%23195!/:?]
    at TRANSFORMER/[email protected]/net.minecraft.world.level.biome.BiomeManager.getBiome(BiomeManager.java:79) ~[server-1.21.1-20240808.144430-srg.jar%23195!/:?]
    at TRANSFORMER/[email protected]/net.minecraft.world.level.LevelReader.getBiome(LevelReader.java:39) ~[server-1.21.1-20240808.144430-srg.jar%23195!/:?]
    at TRANSFORMER/[email protected]/sereneseasons.season.SeasonHooks.warmEnoughToRainSeasonal(SeasonHooks.java:106) ~[SereneSeasons%20v10.1.0.3.jar%23254!/:10.1.0.3]
    at TRANSFORMER/[email protected]/sereneseasons.season.SeasonHooks.shouldFreezeWarmEnoughToRainHook(SeasonHooks.java:51) ~[SereneSeasons%20v10.1.0.3.jar%23254!/:10.1.0.3]

After which the server crashes.

Disclaimer

The mod is very barebones and I do not guarantee that it will fix the issue. From my testing I was able to generate over 200 000 chunks without any problems/crashes (before I made this mod the server crashed after just about 50 chunks were generated), but that does not mean it will fix the issue in your specific case.

Tip:

I reccomend using this alongside WorldGenFeatureFix (not sponsored or anything)

Serene Seasons Gen Fix v2.1.2 NeoForge
MC 1.21, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, NeoForge, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Release 2026-08-16 Get
Serene Seasons Gen Fix v2.1.2 Forge
MC 1.21, 1.21.8, 1.21.5, 1.21.4, Forge, 1.21.1, 1.21.6, 1.21.3, 1.21.7, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Release 2026-08-16 Get
Serene Seasons Gen Fix v2.1.2 Fabric
MC 1.21, Fabric, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Release 2026-08-16 Get
Serene Seasons Gen Fix v1.1.1
MC 1.21.1, NeoForge, Server
Beta 2026-06-27 Get
Serene Seasons Gen Fix v1.1.3
MC 1.21, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, NeoForge, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Release 2026-06-27 Get
Serene Seasons Gen Fix v1.2.2
MC 1.21, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, NeoForge, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Alpha 2026-06-27 Get
Serene Seasons Gen Fix v1.2.4
MC 1.21, 1.21.8, 1.21.5, 1.21.4, 1.21.1, 1.21.6, 1.21.3, 1.21.7, NeoForge, Server, 1.21.2, 1.21.9, 1.21.10, 1.21.11
Release 2026-06-27 Get
Serene Seasons Gen Fix v1.0.5.jar
MC 1.21.1, NeoForge, Server
Release 2026-06-26 Get

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