System Window 10, java ?? Using default game log configuration client-1.12.xml (outputs XML) 12:33:46.770 Environment: authHost=' https://authserver.mojang.com', accountsHost=' https://api.mojang.com', sessionHost=' https://sessionserver.mojang.com', servicesHost=' https://api.minecraftservices.com', name='PROD' 12:33:47.371 Setting user: Xxxxxxxx 12:33:47.458 Backend library: LWJGL version 3.2.2 build 10 12:33:49.190 Narrator library for x64 successfully loaded 12:33:49.506 Reloading ResourceManager: Default, Programmer Art 12:33:54.446 OpenAL initialized on device OpenAL Soft on Speakers (Realtek(R) Audio) 12:33:54.448 Sound engine started 15:09:25.353 Failed to save chunk 46,104 java.lang.NullPointerException: Cannot read field "d" because "$$0" is null at ddm.b(SourceFile:23) at com.mojang.serialization.codecs.RecordCodecBuilder$Instance.lambda$ap2$4(RecordCodecBuilder.java:215) at com.mojang.serialization.codecs.RecordCodecBuilder$2.encode(RecordCodecBuilder.java:112) at com.mojang.serialization.MapCodec$MapCodecCodec.encode(MapCodec.java:96) at xz.a(SourceFile:34) at xv.a(SourceFile:42) at xv.encode(SourceFile:13) at com.mojang.serialization.Encoder.encodeStart(Encoder.java:14) at com.mojang.serialization.codecs.FieldEncoder.encode(FieldEncoder.java:24) at com.mojang.serialization.MapCodec$1.encode(MapCodec.java:39) at com.mojang.serialization.codecs.RecordCodecBuilder$Instance$4.encode(RecordCodecBuilder.java:222) at com.mojang.serialization.codecs.RecordCodecBuilder$2.encode(RecordCodecBuilder.java:112) at com.mojang.serialization.codecs.KeyDispatchCodec.encode(KeyDispatchCodec.java:92) at com.mojang.serialization.MapCodec$MapCodecCodec.encode(MapCodec.java:96) at com.mojang.serialization.Encoder.encodeStart(Encoder.java:14) at dem.a(SourceFile:72) at det.a(SourceFile:119) at dfb.a(SourceFile:53) at dev.a(SourceFile:81) at cqn.a(SourceFile:421) at cqn.a(SourceFile:373) at acp.a(SourceFile:758) at acp.e(SourceFile:457) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$ValueIterator.acceptOnIndex(Long2ObjectLinkedOpenHashMap.java:1736) at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$ValueIterator.acceptOnIndex(Long2ObjectLinkedOpenHashMap.java:1723) at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$MapIterator.forEachRemaining(Long2ObjectLinkedOpenHashMap.java:1260) at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$ValueIterator.forEachRemaining(Long2ObjectLinkedOpenHashMap.java:1723) at it.unimi.dsi.fastutil.objects.ObjectSpliterators$SpliteratorFromIterator.forEachRemaining(ObjectSpliterators.java:1194) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at acp.a(SourceFile:454) at ada.a(SourceFile:305) at adc.a(SourceFile:741) at net.minecraft.server.MinecraftServer.a(SourceFile:561) at net.minecraft.server.MinecraftServer.b(SourceFile:585) at net.minecraft.server.MinecraftServer.a(SourceFile:845) at fcg.a(SourceFile:99) at net.minecraft.server.MinecraftServer.w(SourceFile:684) at net.minecraft.server.MinecraftServer.a(SourceFile:270) at java.base/java.lang.Thread.run(Thread.java:831) 15:09:40.196 Saving and pausing game... 15:09:40.205 Saving chunks for level 'ServerLevel[New World]'/minecraft:overworld 15:09:40.225 Saving chunks for level 'ServerLevel[New World]'/minecraft:the_nether 15:09:40.225 Saving chunks for level 'ServerLevel[New World]'/minecraft:the_end Can not save log file.