AE error

>.... [16:58:05 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing 'enchanter' in n3kas.ae.handlers.commands.EnchanterCommand(enchanter)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:169) ~[patched_1.15.2.jar:git-Paper-334]
at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:761) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.PlayerConnection.handleCommand(PlayerConnection.java:1860) ~[?:git-Paper-334]
at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1668) ~[?:git-Paper-334]
at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.MinecraftServer.ba(MinecraftServer.java:1097) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:1090) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:1051) ~[patched_1.15.2.jar:git-Paper-334]
at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:966) ~[patched_1.15.2.jar:git-Paper-334]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.IllegalArgumentException: Cannot translate null text
at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[patched_1.15.2.jar:git-Paper-334]
at org.bukkit.ChatColor.translateAlternateColorCodes(ChatColor.java:354) ~[patched_1.15.2.jar:git-Paper-334]
at n3kas.ae.features.enchanter.Enchanter.colour(Enchanter.java:28) ~[?:?]
at n3kas.ae.features.enchanter.Enchanter.updateInventory(Enchanter.java:45) ~[?:?]
at n3kas.ae.features.enchanter.Enchanter.openForPlayer(Enchanter.java:40) ~[?:?]
at n3kas.ae.handlers.commands.EnchanterCommand.execute(EnchanterCommand.java:41) ~[?:?]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.15.2.jar:git-Paper-334]
... 16 more