[18:29:02] [pool-2-thread-1/WARN]: [PrivateChests] Task #1176 for PrivateChests v1.0 generated an exception
java.lang.NullPointerException
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftSign.update(CraftSign.java:56) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftBlockState.update(CraftBlockState.java:148) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftBlockState.update(CraftBlockState.java:144) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:344) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:768) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:342) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:705) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$startTickloop$0(MinecraftServer.java:592) ~[custom.jar:1.8.8]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_101]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_101]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_101]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_101]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_101]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
[18:29:02] [pool-2-thread-1/WARN]: [PrivateChests] Task #1177 for PrivateChests v1.0 generated an exception
java.lang.NullPointerException
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftSign.update(CraftSign.java:56) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftBlockState.update(CraftBlockState.java:148) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.block.CraftBlockState.update(CraftBlockState.java:144) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59) ~[custom.jar:1.8.8]
	at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:344) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:768) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:342) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:705) ~[custom.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$startTickloop$0(MinecraftServer.java:592) ~[custom.jar:1.8.8]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_101]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_101]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_101]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_101]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_101]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]