CorpseReborn Error Paste

Date: 02/20/2019 22:01:47
CorpseReborn Version: 2.12.1

Server Version: git-Spigot-596221b-9a1fc1e (MC: 1.12)
Server Type: SPIGOT
Folder Version: v1_12_R1

Exception:
java.lang.NullPointerException: Name is null
	at java.lang.Enum.valueOf(Enum.java:236)
	at org.golde.bukkit.corpsereborn.ServerVersion.valueOf(ServerVersion.java:1)
	at org.golde.bukkit.corpsereborn.Main.onEnable(Main.java:148)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:402)
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:374)
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:323)
	at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:421)
	at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:382)
	at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:337)
	at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:272)
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:544)
	at java.lang.Thread.run(Thread.java:748)


Plugins:
AntiWDL - 0.1
eChatFilter - 1.0
CorpseReborn - 2.12.1
Perms - 1.0
Permissions - 1
Chat - 1
eAPI - 1.0
Vault - 1.6.7-b${env.TRAVIS_BUILD_NUMBER}
ProtocolSupport - 4.26.dev
SkyWars - 2
Citizens - 2.0.24-SNAPSHOT (build 1598)
ViaVersion - 1.6.0
CommandNPC - 1.9.1
CoreClient - 1.0
ProtocolLib - 4.4.0
NoCheatPlus - 3.15.1-RC-sMD5NET-b1084
ItemFixer - 3.0
HolographicDisplays - 2.2.6
Holograms - 1.5

Config:
enable-update-checker: false
corpse-time: 120
on-death: false
looting-inventory: false
despawn-after-looted: false
show-tags: false
world: world
gui-title: %corpse%'s Items
username-format: %corpse%
finish-looting-message: *bYou have finished looting %corpse%'s corpse.
new-hitboxes: false
render-armor: falsesave-corpses: truesend-data: true

Corpses: