[ 12 : 37 : 39 ERROR ] : Could not pass event InventoryClickEvent to ArmorEffectsMaven v1.0
org. bukkit . event . EventException : null
        at org. bukkit . plugin . java . JavaPluginLoader $1. execute ( JavaPluginLoader. java : 308 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at org. bukkit . plugin . RegisteredListener . callEvent ( RegisteredListener. java : 62 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at org. bukkit . plugin . SimplePluginManager . fireEvent ( SimplePluginManager. java : 500 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at org. bukkit . plugin . SimplePluginManager . callEvent ( SimplePluginManager. java : 485 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . PlayerConnection . a ( PlayerConnection. java : 2140 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . PacketPlayInWindowClick . a ( SourceFile : 33 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . PacketPlayInWindowClick . a ( SourceFile : 10 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . PlayerConnectionUtils . a ( SourceFile : 10 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at java. util . concurrent . Executors $RunnableAdapter. call ( Unknown Source ) [ ?:? ]
        at java. util . concurrent . FutureTask . run ( Unknown Source ) [ ?:? ]
        at net. minecraft . server . v1_13_R2 . SystemUtils . a ( SourceFile : 199 ) [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . MinecraftServer . b ( MinecraftServer. java : 896 ) [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . DedicatedServer . b ( DedicatedServer. java : 411 ) [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . MinecraftServer . a ( MinecraftServer. java : 831 ) [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at net. minecraft . server . v1_13_R2 . MinecraftServer . run ( MinecraftServer. java : 729 ) [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        at java. lang . Thread . run ( Unknown Source ) [ ?:? ]
Caused by : java. lang . NullPointerException
        at com. kohlerpop1 . ArmorEffectsMaven . Events . InvClickEvent . InventoryClickEvent ( InvClickEvent. java : 26 ) ~ [ ?:? ]
        at jdk. internal . reflect . NativeMethodAccessorImpl . invoke0 ( Native Method ) ~ [ ?:? ]
        at jdk. internal . reflect . NativeMethodAccessorImpl . invoke ( Unknown Source ) ~ [ ?:? ]
        at jdk. internal . reflect . DelegatingMethodAccessorImpl . invoke ( Unknown Source ) ~ [ ?:? ]
        at java. lang . reflect . Method . invoke ( Unknown Source ) ~ [ ?:? ]
        at org. bukkit . plugin . java . JavaPluginLoader $1. execute ( JavaPluginLoader. java : 304 ) ~ [ spigot - 1.13.1. jar : git - Spigot - 2440e18 - 4228a56 ]
        ... 15 more