The server just says starting for 5-10 minutes then says stopping.
It seems that something is wrong with the end, so I tried deleting the world. It didnt fix it.
[00:57:08] [Server thread/INFO]: Preparing start region for level 2 (Seed: -4625568515368083771)
[00:57:09] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.IllegalArgumentException: ChunkNibbleArrays should be 2048 bytes not: 0
at net.minecraft.server.v1_8_R3.NibbleArray.<init>(NibbleArray.java:14) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkRegionLoader.a(ChunkRegionLoader.java:344) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkRegionLoader.a(ChunkRegionLoader.java:87) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:73) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:25) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:1) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:336) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:115) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:97) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:369) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) ~[minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [minecraft_server.jar:git-Spigot-db6de12-18fbb24]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]
[00:57:09] [Server thread/ERROR]: This crash report has been saved to: /aternos/server/./crash-reports/crash-2018-07-19_00.57.09-server.txt
[00:57:09] [Server thread/INFO]: Stopping server