[08:02:55 WARN]: [MythicMobs] ✗ Config Error: A villager trade with result FrogHead is configured incorrectly.
[08:02:55 WARN]: java.lang.IllegalArgumentException: BukkitItemStack Material cannot be null (could not find material FrogHead)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.adapters.bukkit.BukkitItemStack.<init>(BukkitItemStack.java:54)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.adapters.bukkit.entities.properties.MerchantProperty.<init>(MerchantProperty.java:48)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.adapters.bukkit.entities.BukkitVillager.instantiate(BukkitVillager.java:41)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.mobs.MythicMob.<init>(MythicMob.java:247)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.mobs.MobManager.loadMobs(MobManager.java:168)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.io.ConfigManager.load(ConfigManager.java:102)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.commands.ReloadCommand.onCommand(ReloadCommand.java:29)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.utils.commands.Command.onCommand(Command.java:64)
[08:02:55 WARN]:        at io.lumine.xikage.mythicmobs.utils.commands.Command.onCommand(Command.java:61)
[08:02:55 WARN]:        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
[08:02:55 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
[08:02:55 WARN]:        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:806)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2021)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:1832)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1785)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:47)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:5)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:23)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1133)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1126)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1087)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1001)
[08:02:55 WARN]:        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174)
[08:02:55 WARN]:        at java.lang.Thread.run(Unknown Source)