My server is crashing

[20:25:28] [Server thread/ERROR]: This crash report has been saved to: /aternos/server/./crash-reports/crash-2018-08-12_20.25.28-server.txt

[20:25:28] [Server thread/INFO]: Stopping server

[20:25:28] [Server thread/INFO]: [0;33;22mAll DB transactions during this session are being validated (This may take a while if corrections need to be made)[m

[20:25:29] [Server thread/INFO]: [0;31;1mCould not close database connection![m

[20:25:29] [Server thread/INFO]: Saving players

[20:25:29] [Server thread/INFO]: Saving worlds

[20:25:29] [Server thread/INFO]: Saving chunks for level 'world'/overworld

[20:25:29] [Server thread/INFO]: Saving chunks for level 'world_nether'/the_nether

[20:25:29] [Server thread/INFO]: Saving chunks for level 'world_the_end'/the_end

this is what comes out before the stop message

[13:12:47] [Server thread/WARN]: Could not set level chunk heightmap, array length is 0 instead of 256

174[13:12:47] [Server thread/WARN]: Could not set level chunk heightmap, array length is 0 instead of 256

175[13:12:47] [Server thread/WARN]: Could not set level chunk heightmap, array length is 0 instead of 256

176[13:12:47] [Server thread/ERROR]: Encountered an unexpected exception

177java.lang.IllegalArgumentException: ChunkNibbleArrays should be 2048 bytes not: 0

178 at net.minecraft.server.v1_12_R1.NibbleArray.<init>(NibbleArray.java:14) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

179 at net.minecraft.server.v1_12_R1.ChunkRegionLoader.a(ChunkRegionLoader.java:402) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

180 at net.minecraft.server.v1_12_R1.ChunkRegionLoader.a(ChunkRegionLoader.java:94) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

181 at net.minecraft.server.v1_12_R1.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:72) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

182 at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:21) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

183 at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:1) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

184 at org.bukkit.craftbukkit.v1_12_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:336) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

185 at org.bukkit.craftbukkit.v1_12_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

186 at org.bukkit.craftbukkit.v1_12_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

187 at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:137) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

188 at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:120) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

189 at net.minecraft.server.v1_12_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:116) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

190 at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:374) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

191 at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:338) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

192 at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272) ~[minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

193 at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [minecraft_server.jar:git-Spigot-eb3d921-2b93d83]

194 at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]

195[13:12:47] [Server thread/ERROR]: This crash report has been saved to: /aternos/server/./crash-reports/crash-2018-08-13_13.12.47-server.txt

I put the 1.13 to try now I'm back to 1.12.2 and no longer part

sorry roman but with the 1.13 the server starts

Quote from Roman

https://mclo.gs/HgGRumG#L177

Looks like a problem with the world?

Did you try to start your server with 1.13.

Please note that you can not switch back to 1.12.2 after starting your server once with 1.13

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many plugins do not work with 1.13

Quote from rainbow_donut

that's horrible! people are loosing maps everyday to this

I reset my server