> [17:58:21] [Server thread/INFO]: BountyEye issued server command: /shop disable test
> [17:58:21] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'shop' in plugin VillagerShopGUI v1.0
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:711) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.PlayerConnection.handleCommand(PlayerConnection.java:1657) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1497) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(SourceFile:144) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(SourceFile:118) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.MinecraftServer.ba(MinecraftServer.java:918) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:911) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(SourceFile:127) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:895) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:828) [spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: java.lang.NullPointerException
at me.sky.shop.command.VillagerShopCommand.onCommand(VillagerShopCommand.java:53) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[spigot-1.15.2.jar:git-Spigot-800b93f-8160e29]
... 17 more