java.lang.NullPointerException

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  • java.lang.NullPointerException at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:94)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at org.bukkit.inventory.ItemStack.deserialize(ItemStack.java:536)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at io.github.yannici.bedwars.Villager.MerchantCategory.loadCategories(MerchantCategory.java:117)[?:?] at io.github.yannici.bedwars.Game.Game.loadItemShopCategories(Game.java:1046)[?:?] at io.github.yannici.bedwars.Game.Game.start(Game.java:232)[?:?] at io.github.yannici.bedwars.Game.GameLobbyCountdown.run(GameLobbyCountdown.java:145)[?:?] at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)[spigot-1.8.9.jar:git-Spigot-db6de12-07c3001] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_72]
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