exoticgarden error

[17:57:51] [Server thread/INFO]: [ExoticGarden] Enabling ExoticGarden vDEV - 2 (git 393fe10c)
[17:57:51] [Server thread/ERROR]: Error occurred while enabling ExoticGarden vDEV - 2 (git 393fe10c) (Is it up to date?)
java.lang.NullPointerException: null
	at me.mrCookieSlime.ExoticGarden.ExoticGarden.registerTree(ExoticGarden.java:704) ~[ExoticGarden-2.jar:?]
	at me.mrCookieSlime.ExoticGarden.ExoticGarden.onEnable(ExoticGarden.java:106) ~[ExoticGarden-2.jar:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:339) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:403) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:431) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:345) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at net.minecraft.server.v1_13_R2.MinecraftServer.l(MinecraftServer.java:584) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:546) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:424) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at net.minecraft.server.v1_13_R2.DedicatedServer.init(DedicatedServer.java:294) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:702) [spigot-1.13.1-R0.1-SNAPSHOT.jar:git-Spigot-f6a273b-cd6252a]
	at java.lang.Thread.run(Unknown Source) [?:?]