[01:53:02] [Server thread/INFO]: [KitPvPPlus] Enabling KitPvPPlus v1.5.0
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] --------------------------------------
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] KitPvP Plus
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] Developed by Nucker
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] A customizable KitPvP core for 1.8 - 1.17
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] --------------------------------------
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [INFO] Creating bstats instance
[01:53:02] [Server thread/INFO]: [KitPvPPlus] [SUCCESS] Sending bstats information
[01:53:02] [Server thread/ERROR]: Error occurred while enabling KitPvPPlus v1.5.0 (Is it up to date?)
java.lang.IllegalArgumentException: No enum constant org.bukkit.Material.BLACK_STAINED_GLASS_PANE
    at java.lang.Enum.valueOf(Enum.java:238) ~[?:1.8.0_312]
    at org.bukkit.Material.valueOf(Material.java:1) ~[server.jar:git-Spigot-21fe707-741a1bd]
    at wtf.nucker.simplemenus.spigot.MenuSettings.<init>(MenuSettings.java:31) ~[?:?]
    at wtf.nucker.simplemenus.spigot.MenuManager.<init>(MenuManager.java:35) ~[?:?]
    at wtf.nucker.kitpvpplus.KitPvPPlus.onEnable(KitPvPPlus.java:149) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[server.jar:git-Spigot-21fe707-741a1bd]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [server.jar:git-Spigot-21fe707-741a1bd]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [server.jar:git-Spigot-21fe707-741a1bd]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [server.jar:git-Spigot-21fe707-741a1bd]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [server.jar:git-Spigot-21fe707-741a1bd]
    at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [server.jar:git-Spigot-21fe707-741a1bd]
    at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [server.jar:git-Spigot-21fe707-741a1bd]
    at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [server.jar:git-Spigot-21fe707-741a1bd]
    at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [server.jar:git-Spigot-21fe707-741a1bd]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [server.jar:git-Spigot-21fe707-741a1bd]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]