[1.12.2] Client crashes on login

Server threw an error due to a Mekanism pump trying to do something. So I logged back in to try and erase the pump and when I loaded the chunk the pump was in I got the message below and now can't log in to the server again. How would I fix this?

[22:41:36] [Server thread/WARN] [FML]: Invalid chunk: (28, 9) Offset: 520297 Length: 24 runs off end file. .\world\DIM-1\region\r.0.-1.mca
[22:41:36] [Server thread/WARN] [FML]: Invalid chunk: (29, 9) Offset: 5375878 Length: 83 runs off end file. .\world\DIM-1\region\r.0.-1.mca
[22:41:36] [Server thread/WARN] [net.minecraft.network.NetworkSystem]: Failed to handle packet for /xxx.xxx.xxx.xxx:49584
java.lang.ArrayIndexOutOfBoundsException: -5583902
	at java.util.ArrayList.elementData(Unknown Source) ~[?:1.8.0_231]
	at java.util.ArrayList.set(Unknown Source) ~[?:1.8.0_231]
	at net.minecraft.world.chunk.storage.RegionFile.<init>(RegionFile.java:94) ~[ayj.class:?]
	at net.minecraft.world.chunk.storage.RegionFileCache.func_191065_b(SourceFile:86) ~[ayk.class:?]
	at net.minecraft.world.chunk.storage.RegionFileCache.func_191064_f(SourceFile:120) ~[ayk.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_191063_a(AnvilChunkLoader.java:100) ~[aye.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:119) ~[on.class:?]
	at net.minecraft.server.management.PlayerChunkMapEntry.<init>(PlayerChunkMapEntry.java:49) ~[ot.class:?]
	at net.minecraft.server.management.PlayerChunkMap.func_187302_c(SourceFile:196) ~[ou.class:?]
	at net.minecraft.server.management.PlayerChunkMap.func_72683_a(SourceFile:227) ~[ou.class:?]
	at net.minecraft.server.management.PlayerList.func_72375_a(PlayerList.java:290) ~[pl.class:?]
	at net.minecraft.server.management.PlayerList.func_72377_c(PlayerList.java:378) ~[pl.class:?]
	at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:166) ~[pl.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:255) ~[NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:72) ~[NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:205) ~[NetworkDispatcher$1.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:285) ~[gw.class:?]
	at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [oz.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:790) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]
[22:41:36] [Server thread/INFO] [net.minecraft.network.NetHandlerPlayServer]: Ryutso lost connection: Internal server error
[22:41:36] [Server thread/INFO] [net.minecraft.server.dedicated.DedicatedServer]: Ryutso left the game

crash-2020-12-17_22.15.03-server.txt message.txt