An Error

05.02 18:16:50 [Server] ERROR Chunk file at -9,-2 is in the wrong location; relocating. (Expected -9, -2, got -6, -7)
05.02 18:16:49 [Server] INFO Preparing start region for level 1 (Seed: 436587654635699783)
05.02 18:16:49 [Server] ERROR Chunk file at -25,-8 is in the wrong location; relocating. (Expected -25, -8, got -10, -10)
05.02 18:16:49 [Server] WARN at java.lang.Thread.run(Unknown Source)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:211)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:325)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.MinecraftServer.k(MinecraftServer.java:361)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:95)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:13)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:44)
05.02 18:16:49 [Server] WARN at org.bukkit.craftbukkit.v1_8_R1.generator.NormalChunkGenerator.recreateStructures(NormalChunkGenerator.java:92)
05.02 18:16:49 [Server] WARN at net.minecraft.server.v1_8_R1.ChunkProviderGenerate.recreateStructures(SourceFile:570)