[19:16:24 ERROR]: Unknown registry element in ResourceKey[minecraft:root / minecraft:worldgen/biome]:Direct{net.minecraft.world.level.biome.BiomeBase@631b0b98}; Unknown registry element in ResourceKey[minecraft:root / minecraft:worldgen/biome]:Direct{net.minecraft.world.level.biome.BiomeBase@631b0b98}
[19:16:24 ERROR]: [NewChunkHolder] Failed to asynchronously save chunk [-17, 26] for world 'void', falling back to synchronous save
java.lang.RuntimeException: Unknown registry element in ResourceKey[minecraft:root / minecraft:worldgen/biome]:Direct{net.minecraft.world.level.biome.BiomeBase@631b0b98}; Unknown registry element in ResourceKey[minecraft:root / minecraft:worldgen/biome]:Direct{net.minecraft.world.level.biome.BiomeBase@631b0b98}
        at com.mojang.serialization.DataResult.lambda$getOrThrow$4(DataResult.java:100) ~[datafixerupper-5.0.28.jar:?]
        at com.mojang.datafixers.util.Either$Right.map(Either.java:99) ~[paper-1.19.3.jar:?]
        at com.mojang.serialization.DataResult.getOrThrow(DataResult.java:93) ~[datafixerupper-5.0.28.jar:?]
        at net.minecraft.world.level.chunk.storage.ChunkSerializer.saveChunk(ChunkSerializer.java:580) ~[?:?]
        at io.papermc.paper.chunk.system.scheduling.NewChunkHolder$AsyncChunkSerializeTask.run(NewChunkHolder.java:1791) ~[paper-1.19.3.jar:git-Paper-375]
        at ca.spottedleaf.concurrentutil.executor.standard.PrioritisedThreadedTaskQueue$PrioritisedTask.executeInternal(PrioritisedThreadedTaskQueue.java:351) ~[paper-1.19.3.jar:git-Paper-375]
        at ca.spottedleaf.concurrentutil.executor.standard.PrioritisedThreadedTaskQueue.executeTask(PrioritisedThreadedTaskQueue.java:118) ~[paper-1.19.3.jar:git-Paper-375]
        at ca.spottedleaf.concurrentutil.executor.standard.PrioritisedThreadPool$PrioritisedThread.pollTasks(PrioritisedThreadPool.java:274) ~[paper-1.19.3.jar:git-Paper-375]
        at ca.spottedleaf.concurrentutil.executor.standard.PrioritisedQueueExecutorThread.run(PrioritisedQueueExecutorThread.java:50) ~[paper-1.19.3.jar:git-Paper-375]