When starting the Server
it throws this Error:

[ERROR]: Failed to load data for block entity Sign
java.lang.NullPointerException
at net.minecraft.server.v1_9_R1.TileEntitySign$1.h(TileEntitySign.java:72) ~[spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.ChatComponentScore.a(SourceFile:38) ~[spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.ChatComponentUtils.filterForDisplay(SourceFile:37) ~[spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.TileEntitySign.a(TileEntitySign.java:98) ~[spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.TileEntity.a(TileEntity.java:83) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:370) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:42) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:136) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:118) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.MinecraftServer.l(MinecraftServer.java:367) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.MinecraftServer.a(MinecraftServer.java:331) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:269) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:527) [spigot-1.9.jar:git-Spigot-2038f4a-cd36f6f]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_71]

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Server Info:
Version: 1.9
Plugins: None
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Cause: Sign Data (as far as i know)