> [21:34:42 WARN]: [AutoSell] Task #87 for AutoSell v2.0.10 generated an exception
java.lang.NullPointerException: null
> [21:34:42 ERROR]: Failed to save chunk
java.lang.IndexOutOfBoundsException: Index: 1191, Size: 16
at java.util.ArrayList.rangeCheck(ArrayList.java:657) ~[?:1.8.0_171]
at java.util.ArrayList.set(ArrayList.java:448) ~[?:1.8.0_171]
at net.minecraft.server.v1_12_R1.RegionFile.a(SourceFile:269) ~[custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.RegionFile$ChunkBuffer.close(SourceFile:244) ~[custom.jar:git-Spigot-642f6d2-ab13683]
at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:241) ~[?:1.8.0_171]
at java.io.FilterOutputStream.close(FilterOutputStream.java:159) ~[?:1.8.0_171]
at java.io.FilterOutputStream.close(FilterOutputStream.java:159) ~[?:1.8.0_171]
at net.minecraft.server.v1_12_R1.RegionFileCache.e(RegionFileCache.java:95) ~[custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.b(ChunkRegionLoader.java:212) ~[custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.processSaveQueueEntry(ChunkRegionLoader.java:195) [custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.ChunkRegionLoader.a(ChunkRegionLoader.java:167) [custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.FileIOThread.c(SourceFile:37) [custom.jar:git-Spigot-642f6d2-ab13683]
at net.minecraft.server.v1_12_R1.FileIOThread.run(SourceFile:30) [custom.jar:git-Spigot-642f6d2-ab13683]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]