NPE when typing commands after deleting the locales folder and trying to /bbox reload

[Poslovitch]

Description

>bbox reload
[10:52:00 INFO]: Type command again within 10s to confirm
>bbox reload
[10:52:02 WARN]: [BentoBox] Task #23 for BentoBox v0.17.0-SNAPSHOT generated an exception
java.lang.NullPointerException: null
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:62) ~[?:?]
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:52) ~[?:?]
        at world.bentobox.bentobox.api.user.User.getTranslation(User.java:232) ~[?:?]
        at world.bentobox.bentobox.api.user.User.sendMessage(User.java:267) ~[?:?]
        at world.bentobox.bentobox.commands.BentoBoxReloadCommand.reloadLocales(BentoBoxReloadCommand.java:42) ~[?:?]
        at world.bentobox.bentobox.commands.BentoBoxReloadCommand.lambda$execute$0(BentoBoxReloadCommand.java:32) ~[?:?]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81) ~[spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:391) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:893) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]

Steps to reproduce the behavior:

1. Run a clean install
2. Wait for the server to be fully loaded
3. Type /bbox reload, or /bbox v - to make sure it is working
4. Delete the locales folder
5. Type /bbox reload - NPE
6. Type /bbox v - NPE
   Note that typing /bbox v before /bbox reload will result in this command working fine (see Additionnal context.

Expected behavior
NPEs shouldn't happen. I was expecting the locales folder to be regenerated.

Server Information:

• Database being used: YAML
• OS: Windows 10 x64
• Java Version: 8u192
• BentoBox version: current with the develop branch (7dd06b9)
• Addons installed?

[10:56:53 INFO]: Bentobox version: 0.17.0-SNAPSHOT
[10:56:53 INFO]: Loaded Game Worlds:
[10:56:53 INFO]: BSkyBlock_world (BSkyBlock)
[10:56:53 INFO]: Loaded Add-Ons
[10:56:53 INFO]: BSkyBlock 0.5.0-SNAPSHOT

• Other plugins?
  Plugins (5): LuckPerms, Vault, PlaceholderAPI, BentoBox, Essentials

Additionnal context
Here are the logs I got after deleting the locales folder. We can see that /bbox v works fine until I'm trying to reload BentoBox.

>bbox v
[10:58:22 INFO]: Bentobox version: 0.17.0-SNAPSHOT
[10:58:22 INFO]: Loaded Game Worlds:
[10:58:22 INFO]: BSkyBlock_world (BSkyBlock)
[10:58:22 INFO]: Loaded Add-Ons
[10:58:22 INFO]: BSkyBlock 0.5.0-SNAPSHOT
>bbox reload
[10:58:25 INFO]: Type command again within 10s to confirm
>bbox reload
[10:58:26 WARN]: [BentoBox] Task #20 for BentoBox v0.17.0-SNAPSHOT generated an exception
java.lang.NullPointerException: null
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:62) ~[?:?]
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:52) ~[?:?]
        at world.bentobox.bentobox.api.user.User.getTranslation(User.java:232) ~[?:?]
        at world.bentobox.bentobox.api.user.User.sendMessage(User.java:267) ~[?:?]
        at world.bentobox.bentobox.commands.BentoBoxReloadCommand.reloadLocales(BentoBoxReloadCommand.java:42) ~[?:?]
        at world.bentobox.bentobox.commands.BentoBoxReloadCommand.lambda$execute$0(BentoBoxReloadCommand.java:32) ~[?:?]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftTask.run(CraftTask.java:81) ~[spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at org.bukkit.craftbukkit.v1_13_R2.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:391) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:893) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
>bbox v
[11:00:55 WARN]: Unexpected exception while parsing console command "bbox v"
org.bukkit.command.CommandException: Unhandled exception executing 'bbox v' in world.bentobox.bentobox.commands.BentoBoxCommand(bentobox)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:146) ~[spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:702) ~[spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchServerCommand(CraftServer.java:687) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.DedicatedServer.aU(DedicatedServer.java:459) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:418) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.NullPointerException
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:62) ~[?:?]
        at world.bentobox.bentobox.managers.LocalesManager.get(LocalesManager.java:52) ~[?:?]
        at world.bentobox.bentobox.api.user.User.getTranslation(User.java:232) ~[?:?]
        at world.bentobox.bentobox.api.user.User.sendMessage(User.java:267) ~[?:?]
        at world.bentobox.bentobox.commands.BentoBoxVersionCommand.execute(BentoBoxVersionCommand.java:31) ~[?:?]
        at world.bentobox.bentobox.api.commands.CompositeCommand.execute(CompositeCommand.java:237) ~[?:?]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:139) ~[spigot-1.13.2.jar:git-Spigot-e769fe4-5f5a676]
        ... 7 more