[21:54:46 ERROR]: Error occurred while enabling LagAssist v2.15.4 (Is it up to date?)
java.lang.IllegalArgumentException: Material cannot be null
at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:73) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:61) ~[patched_1.14.3.jar:git-Paper-111]
at cx.sfy.LagAssist.utils.V1_12.getStatics(V1_12.java:18) ~[?:?]
at cx.sfy.LagAssist.utils.VersionMgr.getStatics(VersionMgr.java:22) ~[?:?]
at cx.sfy.LagAssist.gui.DataGUI.setItems(DataGUI.java:72) ~[?:?]
at cx.sfy.LagAssist.gui.DataGUI.Enabler(DataGUI.java:58) ~[?:?]
at cx.sfy.LagAssist.Main.EnableClasses(Main.java:83) ~[?:?]
at cx.sfy.LagAssist.Main.onEnable(Main.java:56) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:338) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:419) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugin(CraftServer.java:464) ~[patched_1.14.3.jar:git-Paper-111]
at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugins(CraftServer.java:378) ~[patched_1.14.3.jar:git-Paper-111]
at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:464) ~[patched_1.14.3.jar:git-Paper-111]
at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:282) ~[patched_1.14.3.jar:git-Paper-111]
at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:859) ~[patched_1.14.3.jar:git-Paper-111]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]