Reload Error

16.01 09:42:31 [Server] INFO ... 15 more
16.01 09:42:31 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at com.herocraftonline.heroes.Heroes.onCommand(Heroes.java:297) ~[?:?]
16.01 09:42:31 [Server] INFO at com.herocraftonline.heroes.command.CommandHandler.dispatch(CommandHandler.java:79) ~[?:?]
16.01 09:42:31 [Server] INFO at com.herocraftonline.heroes.command.commands.ConfigReloadCommand.execute(ConfigReloadCommand.java:24) ~[?:?]
16.01 09:42:31 [Server] INFO at com.herocraftonline.heroes.util.ConfigManager.reload(ConfigManager.java:134) ~[?:?]
16.01 09:42:31 [Server] INFO at com.herocraftonline.heroes.Heroes.log(Heroes.java:137) ~[?:?]
16.01 09:42:31 [Server] INFO Caused by: java.lang.NullPointerException
16.01 09:42:31 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_144]
16.01 09:42:31 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_144]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1232) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1397) [spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot_latest.jar:git-Spigot-9b8bba4-bd30843]
16.01 09:42:31 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'heroes' in plugin Heroes v1.8.12-SNAPSHOT-934f256
16.01 09:42:31 [Server] ERROR null
16.01 09:42:31 [Server] ERROR Critical error encountered while reloading. Disabling...
16.01 09:42:31 [Server] WARN at java.lang.Thread.run(Unknown Source)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46)
16.01 09:42:31 [Server] WARN at java.util.concurrent.FutureTask.run(Unknown Source)
16.01 09:42:31 [Server] WARN at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1232)
16.01 09:42:31 [Server] WARN at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1397)
16.01 09:42:31 [Server] WARN at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648)
16.01 09:42:31 [Server] WARN at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
16.01 09:42:31 [Server] WARN at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.Heroes.onCommand(Heroes.java:297)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.command.CommandHandler.dispatch(CommandHandler.java:79)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.command.commands.ConfigReloadCommand.execute(ConfigReloadCommand.java:24)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.util.ConfigManager.reload(ConfigManager.java:126)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.util.ConfigManager.loadManagers(ConfigManager.java:101)
16.01 09:42:31 [Server] WARN at com.herocraftonline.heroes.Heroes.log(Heroes.java:137)
16.01 09:42:31 [Server] WARN java.lang.NullPointerException
16.01 09:42:31 [Server] INFO ---- Loading classes, expect verbose logging. ----