[17:28:54 ERROR]: Error occurred while enabling MiniShop v1.5.2 (Is it up to dat
e?)
java.lang.NullPointerException
        at com.gmail.vkhanh234.MiniShop.Config.Node.loadDisplayItem(Node.java:48
) ~[?:?]
        at com.gmail.vkhanh234.MiniShop.Config.Node.<init>(Node.java:29) ~[?:?]
        at com.gmail.vkhanh234.MiniShop.Config.Category.load(Category.java:54) ~
[?:?]
        at com.gmail.vkhanh234.MiniShop.Config.Category.<init>(Category.java:37)
 ~[?:?]
        at com.gmail.vkhanh234.MiniShop.Config.CategoryList.<init>(CategoryList.
java:43) ~[?:?]
        at com.gmail.vkhanh234.MiniShop.MiniShop.initConfig(MiniShop.java:66) ~[
?:?]
        at com.gmail.vkhanh234.MiniShop.MiniShop.onEnable(MiniShop.java:30) ~[?:
?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[s
pigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader
.java:340) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage
r.java:405) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.jav
a:357) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.
java:317) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:4
14) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:3
78) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:3
33) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.jav
a:263) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java
:525) [spigot-1.8.8-R0.1-SNAPSHOT-latest.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_171]