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java.lang.NullPointerException: 	at com.flobi.floauction.utilities.Items.isSame(Items.java:560)	at com.flobi.floauction.utilities.Items.isSameItem(Items.java:502)	at com.flobi.floauction.utilities.Items.getAmount(Items.java:630)	at com.flobi.floauction.Auction.parseArgAmount(Auction.java:1017)	at com.flobi.floauction.Auction.parseArgs(Auction.java:857)	at com.flobi.floauction.Auction.isValid(Auction.java:445)	at com.flobi.floauction.AuctionScope.queueAuction(AuctionScope.java:211)	at com.flobi.floauction.FloAuction.onCommand(FloAuction.java:918)	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:146)	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:664)	at net.minecraft.server.v1_9_R1.PlayerConnection.handleCommand(PlayerConnection.java:1381)	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1193)	at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:45)	at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:5)	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45)	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:810)	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:404)	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:720)	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:619)	at java.lang.Thread.run(Thread.java:745)