org.bukkit.command.CommandException: Unhandled exception executing command 'skyb
lock' in plugin uSkyBlock v1.0.7
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:19
0)
        at org.bukkit.craftbukkit.v1_6_R2.CraftServer.dispatchCommand(CraftServe
r.java:527)
        at net.minecraft.server.v1_6_R2.PlayerConnection.handleCommand(PlayerCon
nection.java:981)
        at net.minecraft.server.v1_6_R2.PlayerConnection.chat(PlayerConnection.j
ava:892)
        at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java
:839)
        at net.minecraft.server.v1_6_R2.Packet3Chat.handle(SourceFile:49)
        at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:230
)
        at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java
:118)
        at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
        at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java
:125)
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:5
92)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:2
39)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:4
81)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java
:413)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:5
82)
Caused by: java.lang.NullPointerException
        at org.bukkit.Location.getBlock(Location.java:82)
        at us.talabrek.ultimateskyblock.uSkyBlock.isSafeLocation(uSkyBlock.java:
751)
        at us.talabrek.ultimateskyblock.uSkyBlock.getSafeHomeLocation(uSkyBlock.
java:704)
        at us.talabrek.ultimateskyblock.uSkyBlock.homeTeleport(uSkyBlock.java:10
97)
        at us.talabrek.ultimateskyblock.IslandCommand.onCommand(IslandCommand.ja
va:66)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        ... 15 more