chunk sections not downloading for 1.12.2 server

[KanesConners]

Describe the bug
Short description of what the bug is.

Steps to reproduce
trying to download a section of darwin reforged server that uses conquest reforged mod pack

Log output
java.lang.ArrayIndexOutOfBoundsException: Index -2 out of bounds for length 1873
at game.data.chunk.version.encoder.BlockLocationEncoder.fetch(BlockLocationEncoder.java:20)
at game.data.chunk.ChunkSection.getPaletteIndex(ChunkSection.java:128)
at game.data.chunk.ChunkSection.getPaletteIndex(ChunkSection.java:120)
at game.data.chunk.version.ChunkSection_1_12.setBlocks(ChunkSection_1_12.java:55)
at game.data.chunk.Chunk.readChunkColumn(Chunk.java:170)
at game.data.chunk.Chunk.parse(Chunk.java:304)
at game.data.chunk.ChunkFactory.parseChunk(ChunkFactory.java:127)
at game.data.chunk.ChunkFactory.readChunkDataPacket(ChunkFactory.java:144)
at game.data.chunk.ChunkFactory.parse(ChunkFactory.java:104)
at game.data.chunk.ChunkFactory.lambda$addChunk$9(ChunkFactory.java:91)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
Chunk could not be parsed!
java.lang.ArrayIndexOutOfBoundsException: Index -2 out of bounds for length 64
at game.data.chunk.version.encoder.BlockLocationEncoder.fetch(BlockLocationEncoder.java:20)
at game.data.chunk.ChunkSection.getPaletteIndex(ChunkSection.java:128)
at game.data.chunk.ChunkSection.getPaletteIndex(ChunkSection.java:120)
at game.data.chunk.version.ChunkSection_1_12.setBlocks(ChunkSection_1_12.java:55)
at game.data.chunk.Chunk.readChunkColumn(Chunk.java:170)
at game.data.chunk.Chunk.parse(Chunk.java:304)
at game.data.chunk.ChunkFactory.parseChunk(ChunkFactory.java:127)
at game.data.chunk.ChunkFactory.readChunkDataPacket(ChunkFactory.java:144)
at game.data.chunk.ChunkFactory.parse(ChunkFactory.java:104)
at game.data.chunk.ChunkFactory.lambda$addChunk$9(ChunkFactory.java:91)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1583)
Chunk could not be parsed!
java.lang.ArrayIndexOutOfBoundsException
Chunk could not be parsed!

java.lang.ArrayIndexOutOfBoundsException
Chunk could not be parsed!
java.lang.ArrayIndexOutOfBoundsException
Chunk could not be parsed!

java.lang.ArrayIndexOutOfBoundsException
Chunk could not be parsed!

java.lang.ArrayIndexOutOfBoundsException
Chunk could not be parsed!

Version

• Game: Minecraft 1.12.2
• Downloader: latest