[21:53:46] [Server thread/ERROR] (Minecraft) Couldn't load chunk [-15, 31]
java.util.NoSuchElementException: null
at it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap.firstIntKey(Int2ObjectAVLTreeMap.java:981) ~[fastutil-8.2.1.jar:?]
at com.mojang.datafixers.DataFixerUpper.getLowestSchemaSameVersion(DataFixerUpper.java:101) ~[datafixerupper-4.0.26.jar:?]
at com.mojang.datafixers.DataFixerUpper.getSchema(DataFixerUpper.java:93) ~[datafixerupper-4.0.26.jar:?]
at com.mojang.datafixers.DataFixerUpper.getType(DataFixerUpper.java:97) ~[datafixerupper-4.0.26.jar:?]
at com.mojang.datafixers.DataFixerUpper.update(DataFixerUpper.java:83) ~[datafixerupper-4.0.26.jar:?]
at net.minecraft.nbt.NbtHelper.update(NbtHelper.java:520) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.nbt.NbtHelper.update(NbtHelper.java:273) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.world.storage.VersionedChunkStorage.updateChunkTag(VersionedChunkStorage.java:43) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.world.ThreadedAnvilChunkStorage.getUpdatedChunkTag(ThreadedAnvilChunkStorage.java:832) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.world.ThreadedAnvilChunkStorage.method_17256(ThreadedAnvilChunkStorage.java:491) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1764) ~[?:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java) ~[?:?]
at net.minecraft.util.thread.ThreadExecutor.executeTask(ThreadExecutor.java:136) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.world.ServerChunkManager$MainThreadExecutor.executeTask(ServerChunkManager.java:517) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.util.thread.ThreadExecutor.runTask(ThreadExecutor.java:109) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.world.ServerChunkManager$MainThreadExecutor.runTask(ServerChunkManager.java:525) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.world.ServerChunkManager.executeQueuedTasks(ServerChunkManager.java:268) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.method_20415(MinecraftServer.java:737) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.runTask(MinecraftServer.java:723) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.util.thread.ThreadExecutor.runTasks(ThreadExecutor.java:119) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.method_16208(MinecraftServer.java:709) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.prepareStartRegion(MinecraftServer.java:476) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.loadWorld(MinecraftServer.java:315) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.integrated.IntegratedServer.setupServer(IntegratedServer.java:63) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:639) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:224) ~[minecraft-1.16.2-projectmapped-net.fabricmc.yarn-1.16.2+build.26-v2.jar:?]
at java.lang.Thread.run(Thread.java:832) [?:?]
