[23:34:49] [Server thread/INFO]: [RewardPRO] Enabling RewardPRO v3.17
[23:34:49] [Server thread/ERROR]: Error occurred while enabling RewardPRO v3.17 (Is it up to date?)
java.lang.IllegalArgumentException: Material cannot be null
	at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:73) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:61) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:49) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:39) ~[minecraft_server.jar:git-Paper-131]
	at eu.superm.minecraft.rewardpro.presentman.Presents.<init>(Presents.java:64) ~[?:?]
	at eu.superm.minecraft.rewardpro.configuration.ConfigPresentman.readDate(ConfigPresentman.java:58) ~[?:?]
	at eu.superm.minecraft.rewardpro.hauptklasse.Main.onEnable(Main.java:56) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:338) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:420) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugin(CraftServer.java:467) ~[minecraft_server.jar:git-Paper-131]
	at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugins(CraftServer.java:381) ~[minecraft_server.jar:git-Paper-131]
	at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:464) ~[minecraft_server.jar:git-Paper-131]
	at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:282) ~[minecraft_server.jar:git-Paper-131]
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:859) ~[minecraft_server.jar:git-Paper-131]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
[23:34:49] [Server thread/INFO]: [RewardPRO] Disabling RewardPRO v3.17