[17:32:08 ERROR]: Could not pass event InventoryClickEvent to ShopGUIPlus v1.20.1
java.lang.NullPointerException: null
        at net.brcdev.shopgui.gui.gui.AmountSelectionGui.createInventory(AmountSelectionGui.java:100) ~[?:?]
        at net.brcdev.shopgui.gui.gui.AmountSelectionGui.<init>(AmountSelectionGui.java:41) ~[?:?]
        at net.brcdev.shopgui.listener.PlayerListener.clickBuy(PlayerListener.java:755) ~[?:?]
        at net.brcdev.shopgui.listener.PlayerListener.onInventoryClick(PlayerListener.java:453) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor213.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.14.4.jar:git-Paper-171]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.14.4.jar:git-Paper-171]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.14.4.jar:git-Paper-171]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:545) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:2310) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:33) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.PacketPlayInWindowClick.a(SourceFile:10) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:1012) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:1005) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:989) ~[patched_1.14.4.jar:git-Paper-171]
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:922) ~[patched_1.14.4.jar:git-Paper-171]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]