Bukkit

Minecraft Server Version

(Please also add the exact version number you use)

[  ] Bukkit 

[ x ] Spigot 

[  ] Paper 

[  ] Other (Please name them)

Server Version: 1.20.1

Plugin Version: 1.6.2

Description

(Describe your problem / bug / conflict or feature here. You also can use images.)

How to Reproduce

(Describe how you found the problem and how I can reproduce it.)

Every time I try and open the UI its just blank and i get this error code in my server

Used Plugins

(List the plugins you use on your server. You dont have to list all of them, just the ones you think they're important to the problem.)

Short Stacktrace / Errorlog (If present)

[Server thread/ERROR]: Could not pass event InventoryOpenEvent to XPStorage v1.6.2
org.bukkit.event.EventException: null
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R1.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:1310) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3871-Spigot-d2eba2c-3f9263b]