18.10 00:24:33 [Server] INFO [Sky] Enabling Sky v1.0.1a
18.10 00:24:33 [Server] ERROR #!#!
18.10 00:24:33 [Server] ERROR #!#! [Skript] Severe Error:
18.10 00:24:33 [Server] ERROR #!#! Sky's class me.limeglass.sky.elements.askyblock.expressions.ExprIslandLocked generated an exception while loading
18.10 00:24:33 [Server] ERROR #!#!
18.10 00:24:33 [Server] ERROR #!#! Your server platform appears to be unsupported by Skript. It might not work reliably.
18.10 00:24:33 [Server] ERROR #!#! You can report this at https://github.com/SkriptLang/Skript/issues. However, we may be unable to fix the issue.
18.10 00:24:33 [Server] ERROR #!#! It is recommended that you switch to Paper or Spigot, should you encounter more problems.
18.10 00:24:33 [Server] ERROR #!#!
18.10 00:24:33 [Server] ERROR #!#! Stack trace:
18.10 00:24:33 [Server] ERROR #!#! java.lang.IllegalArgumentException: returnType must be a normal type
18.10 00:24:33 [Server] ERROR #!#!     at ch.njol.skript.Skript.registerExpression(Skript.java:1302)
18.10 00:24:33 [Server] ERROR #!#!     at ch.njol.skript.expressions.base.PropertyExpression.register(PropertyExpression.java:53)
18.10 00:24:33 [Server] ERROR #!#!     at me.limeglass.sky.elements.askyblock.expressions.ExprIslandLocked.<clinit>(ExprIslandLocked.java:24)
18.10 00:24:33 [Server] ERROR #!#!     at java.lang.Class.forName0(Native Method)
18.10 00:24:33 [Server] ERROR #!#!     at java.lang.Class.forName(Class.java:348)
18.10 00:24:33 [Server] ERROR #!#!     at ch.njol.skript.SkriptAddon.loadClasses(SkriptAddon.java:108)
18.10 00:24:33 [Server] ERROR #!#!     at me.limeglass.sky.Sky.onEnable(Sky.java:61)
18.10 00:24:33 [Server] ERROR #!#!     at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264)
18.10 00:24:33 [Server] ERROR #!#!     at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:316)
18.10 00:24:33 [Server] ERROR #!#!     at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405)
18.10 00:24:33 [Server] ERROR #!#!     at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.java:395)
18.10 00:24:33 [Server] ERROR #!#!     at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer.java:344)
18.10 00:24:33 [Server] ERROR #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.t(MinecraftServer.java:442)
18.10 00:24:33 [Server] ERROR #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.l(MinecraftServer.java:403)
18.10 00:24:33 [Server] ERROR #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.a(MinecraftServer.java:341)
18.10 00:24:33 [Server] ERROR #!#!     at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:289)
18.10 00:24:33 [Server] ERROR #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:616)
18.10 00:24:33 [Server] ERROR #!#!     at java.lang.Thread.run(Thread.java:748)