New Town can't do anything

[GaburaisuVGC]

A new player joined and did /t new
But there was no message, the Town was created but when I did /t nameofthetown, there was nothing (no text)
and this error when I type /t nameofthetown :

[21:29:31 WARN]: [Towny] Plugin Towny v0.93.1.0 generated an exception while executing task 104966
java.lang.NullPointerException: null
at net.milkbowl.vault.economy.plugins.Economy_Craftconomy3.getBalance(Economy_Craftconomy3.java:279) ~[?:?]
at net.milkbowl.vault.economy.plugins.Economy_Craftconomy3.getBalance(Economy_Craftconomy3.java:121) ~[?:?]
at com.palmergames.bukkit.towny.TownyEconomyHandler.getBalance(TownyEconomyHandler.java:257) ~[?:?]
at com.palmergames.bukkit.towny.object.TownyEconomyObject.getHoldingBalance(TownyEconomyObject.java:170) ~[?:?]
at com.palmergames.bukkit.towny.object.TownyEconomyObject.getHoldingFormattedBalance(TownyEconomyObject.java:197) ~[?:?]
at com.palmergames.bukkit.towny.TownyFormatter.getStatus(TownyFormatter.java:351) ~[?:?]
at com.palmergames.bukkit.towny.command.TownCommand$3.run(TownCommand.java:557) ~[?:?]
at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:76) ~[server.jar:git-Spigot-e8ded36-acbc348]
at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [server.jar:git-Spigot-e8ded36-acbc348]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]

The player coudn't add resident and do other commands.
Did I mess up with something in the config ?
My plugins are : Warp, dynmap, LuckPerms, WorldEdit, ChatMessenger,OpenInv,LoginSecurity,PlaceholderAPI,Craftconomy3,EasySetSpawn,Elevator,BetterChairs,WorldBorder,WorldGuard,SimpleTPA,SkinsRestorer,OldCombatMechanics,BasicAntiCheat,Vault,StaffPlus,Towny,ExtraContexts,QuickShop,ChatEx and Dynmap-Towny

I'm on 1.12.2 and there was nothing until now.
config.txt