NPE on start-up

[cobrex1]

What is happening?

The plugin disables on start-up with the following error:
Error occurred while enabling ChestShop v3.12.3-SNAPSHOT (build 389) (Is it up to date?)
java.lang.NullPointerException: Cannot read the array length because the return value of "com.mojang.authlib.yggdrasil.response.ProfileSearchResultsResponse.getProfiles()" is null

What did you expect to happen?

The plugin to start as normal. I have not changed any values in the config files.

Plugin Version

3.12.3-SNAPSHOT (build 389)

Plugin Config

Config

# Should the plugin log some messages that are useful for debugging?
DEBUG: false

# Do you want to turn off the automatic updates of ChestShop?
TURN_OFF_UPDATES: true
# Do you want to turn off the automatic notifications for new development builds?
TURN_OFF_DEV_UPDATE_NOTIFIER: false
# Do you want to include some values of this config in the metrics? (This will not submit any sensitive data and helps in the development process)
INCLUDE_SETTINGS_IN_METRICS: true

# How large should the internal caches be?
CACHE_SIZE: 1000

# The default language when the client's language can't be found.
DEFAULT_LANGUAGE: "en"
# Should the plugin try to use a language file that matches the client's locale setting?
USE_CLIENT_LOCALE: true
# Should the plugin strip the colors from formatted price?
STRIP_PRICE_COLORS: false

# What containers are allowed to hold a shop? (Only blocks with inventories work!)
SHOP_CONTAINERS: 
- "CHEST"
- "TRAPPED_CHEST"

# (In 1/1000th of a second) How often can a player use the shop sign?
SHOP_INTERACTION_INTERVAL: 250
# Do you want to block people in creative mode from using shops?
IGNORE_CREATIVE_MODE: true
# Do you want to block people who have access to a shop due to their permissions from using it? (owners are always ignored)
IGNORE_ACCESS_PERMS: false
# If true, people will buy with left-click and sell with right-click.
REVERSE_BUTTONS: false
# If true, people will be able to buy/sell in 64 stacks while holding the crouch button.
SHIFT_SELLS_IN_STACKS: false
# If true, people will be able to sell/buy everything available of the same type.
SHIFT_SELLS_EVERYTHING: false
# What can you do by clicking shift with SHIFT_SELLS_IN_STACKS turned on? (ALL/BUY/SELL)
SHIFT_ALLOWS: "ALL"
# Can shop's chest be opened by owner with right-clicking a shop's sign?
ALLOW_SIGN_CHEST_OPEN: false
# If true and in 1.14+, the owner of a chest shop can click with a dye / ink sac to dye the sign.
SIGN_DYING: true
# If true, when you left-click your own shop sign you won't open chest's inventory, but instead you will start destroying the sign.
ALLOW_LEFT_CLICK_DESTROYING: true

# If true, if the shop is empty, the sign is destroyed and put into the chest, so the shop isn't usable anymore.
REMOVE_EMPTY_SHOPS: false
# If true, if the REMOVE_EMPTY_SHOPS option is turned on, the chest is also destroyed.
REMOVE_EMPTY_CHESTS: false
# A list of worlds in which to remove empty shops with the previous config. Case sensitive. An empty list means all worlds.
REMOVE_EMPTY_WORLDS: 
- "world1"
- "world2"

# First line of your Admin Shop's sign should look like this:
ADMIN_SHOP_NAME: "Admin Shop"
# Make all admin shops be unlimited even if they have a shop container at the sign
FORCE_UNLIMITED_ADMIN_SHOP: false
# The name of the economy account which Admin Shops should use and to which all taxes will go
SERVER_ECONOMY_ACCOUNT: ""
# The uuid of the economy account for the Admin Shop. Useful for fake accounts as normally only accounts of players work
SERVER_ECONOMY_ACCOUNT_UUID: 00000000-0000-0000-0000-000000000000
# Percent of the price that should go to the server's account. (100 = 100 percent)
TAX_AMOUNT: 0
# Percent of the price that should go to the server's account when buying from an Admin Shop.
SERVER_TAX_AMOUNT: 0
# Amount of money player must pay to create a shop
SHOP_CREATION_PRICE: 0
# How much money do you get back when destroying a sign?
SHOP_REFUND_PRICE: 0
# How many decimal places are allowed at a maximum for prices?
PRICE_PRECISION: 2
# This makes sure that the UUIDs of player shop accounts match the server's online-mode setting. Disabling this might lead to issues with offline players and is therefore unsupported!
ENSURE_CORRECT_PLAYERID: true
# This regexp validates the name of the player. If the name doesn't match, the player will neither be able to create a valid shop sign, nor buy/sell from a shop.
# Note for Bedrock support: If you have Floodgate on your server, you should set this regexp to ^\\.?\\w+$ and ENSURE_CORRECT_PLAYERID to false
# If your Floodgate prefix is not a dot, then change the first . in the regexp (the one before the question mark) to whatever your prefix is.
VALID_PLAYERNAME_REGEXP: "^\\w+$"

# Should we block shops that sell things for more than they buy? (This prevents newbies from creating shops that would be exploited)
BLOCK_SHOPS_WITH_SELL_PRICE_HIGHER_THAN_BUY_PRICE: true

# Maximum amount of items that can be bought/sold at a shop. Default 3456 is a double chest of 64 stacks.
MAX_SHOP_AMOUNT: 3456

# Do you want to allow other players to build a shop on a block where there's one already?
ALLOW_MULTIPLE_SHOPS_AT_ONE_BLOCK: false
# Can shops be used even when the buyer/seller doesn't have enough items, space or money? (The price will be scaled adequately to the item amount)
ALLOW_PARTIAL_TRANSACTIONS: true
# Can '?' be put in place of item name in order for the sign to be auto-filled?
ALLOW_AUTO_ITEM_FILL: true

# Enable this if you use BungeeCord and want players to receive shop notifications on other servers
BUNGEECORD_MESSAGES: false

# Do you want to show "Out of stock" messages?
SHOW_MESSAGE_OUT_OF_STOCK: true
# Do you want to show "Full shop" messages?
SHOW_MESSAGE_FULL_SHOP: true
# How many seconds do you want to wait before showing notifications for the same shop to the owner again?
NOTIFICATION_MESSAGE_COOLDOWN: 10

# Can players hide the "Out of stock" messages with /cstoggle?
CSTOGGLE_TOGGLES_OUT_OF_STOCK: false
# Can players hide the "Full shop" messages with /cstoggle?
CSTOGGLE_TOGGLES_FULL_SHOP: false
# Do you want to show "You bought/sold... " messages?
SHOW_TRANSACTION_INFORMATION_CLIENT: true
# Do you want to show "Somebody bought/sold... " messages?
SHOW_TRANSACTION_INFORMATION_OWNER: true

# If true, plugin will log transactions in its own file
LOG_TO_FILE: false
# Do you want ChestShop's transaction messages to show up in console?
LOG_TO_CONSOLE: true
# Should all shop removals be logged?
LOG_ALL_SHOP_REMOVALS: true

# Do you want to stack all items up to 64 item stacks?
STACK_TO_64: false
# Do you want to use built-in protection against chest destruction?
USE_BUILT_IN_PROTECTION: true
# Do you want to have shop signs "stick" to chests?
STICK_SIGNS_TO_CHESTS: false
# EXPERIMENTAL: Do you want to turn off the default protection when another plugin is protecting the block? (Will leave the chest visually open - CraftBukkit bug!)
TURN_OFF_DEFAULT_PROTECTION_WHEN_PROTECTED_EXTERNALLY: false
# Do you want to turn off the default sign protection? Warning! Other players will be able to destroy other people's shops!
TURN_OFF_SIGN_PROTECTION: false
# Do you want to disable the hopper protection, which prevents Hopper-Minecarts from taking items out of shops?
TURN_OFF_HOPPER_PROTECTION: false
# Only allow users to buy/sell that have access to the sign's protection? (E.g. LWC protection)
CHECK_ACCESS_FOR_SHOP_USE: false
# Do you want to protect shop chests with LWC?
PROTECT_CHEST_WITH_LWC: false
# Of which type should the container protection be? Possible type: public, private, donate and on some LWC versions display
LWC_CHEST_PROTECTION_TYPE: "PRIVATE"
# Do you want to protect shop signs with LWC?
PROTECT_SIGN_WITH_LWC: false
# Of which type should the sign protection be? Possible type: public, private, donate and on some LWC versions display
LWC_SIGN_PROTECTION_TYPE: "PRIVATE"
# Should the chest's LWC protection be removed once the shop sign is destroyed? 
REMOVE_LWC_PROTECTION_AUTOMATICALLY: true
# Should LWC limits block shop creations?
LWC_LIMITS_BLOCK_CREATION: true

# Do you want to only let people build inside WorldGuard regions?
WORLDGUARD_INTEGRATION: true
# Do you want to only let people build inside region flagged by doing /region regionName flag allow-shop allow?
WORLDGUARD_USE_FLAG: true
# Do you want ChestShop to respect WorldGuard's chest protection?
WORLDGUARD_USE_PROTECTION: false

# Do you want to only let people build inside GriefPrevention claims?
GRIEFPREVENTION_INTEGRATION: false

# Do you want to only let people build inside RedProtect regions?
REDPROTECT_INTEGRATION: false

# Do you want to deny shop access to unlogged users?
AUTHME_HOOK: true
# Do you want to allow shop access to unregistered users? (Example: registration is optional)
AUTHME_ALLOW_UNREGISTERED: false

# How much Heroes exp should people get for creating a ChestShop?
HEROES_EXP: 100.0

# Add icons and make item names hoverable in transaction messages when ShowItem is installed?
SHOWITEM_MESSAGE: true

# Add stock counter to quantity line?
USE_STOCK_COUNTER: false

Server Version

Paper 1.20.1 build 116

Server Log

Log

[01:51:43] [Server thread/INFO]: [ChestShop] Enabling ChestShop v3.12.3-SNAPSHOT (build 389)
[01:51:43] [Server thread/INFO]: [ChestShop] Found locales hu, es_mx, sv, en, ro, zh_tw, fi, tr, af, ca, da, it, ru, nl, cs, vi, pt_br, he, zh, es, ko, no, fr, el, ja, uk, de, pl, ar, sr
[01:51:43] [Server thread/ERROR]: Error occurred while enabling ChestShop v3.12.3-SNAPSHOT (build 389) (Is it up to date?)
java.lang.NullPointerException: Cannot read the array length because the return value of "com.mojang.authlib.yggdrasil.response.ProfileSearchResultsResponse.getProfiles()" is null
  at com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository.findProfilesByNames(YggdrasilGameProfileRepository.java:59) ~[paper-1.20.1.jar:?]
  at com.destroystokyo.paper.profile.PaperGameProfileRepository.findProfilesByNames(PaperGameProfileRepository.java:44) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.players.GameProfileCache.lookupGameProfile(GameProfileCache.java:110) ~[?:?]
  at net.minecraft.server.players.GameProfileCache.get(GameProfileCache.java:181) ~[?:?]
  at org.bukkit.craftbukkit.v1_20_R1.CraftServer.getOfflinePlayer(CraftServer.java:1961) ~[paper-1.20.1.jar:git-Paper-116]
  at org.bukkit.Bukkit.getOfflinePlayer(Bukkit.java:1335) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
  at com.Acrobot.ChestShop.UUIDs.NameManager.load(NameManager.java:347) ~[ChestShop.389.jar:?]
  at com.Acrobot.ChestShop.ChestShop.loadConfig(ChestShop.java:190) ~[ChestShop.389.jar:?]
  at com.Acrobot.ChestShop.ChestShop.onEnable(ChestShop.java:158) ~[ChestShop.389.jar:?]
  at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:281) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
  at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:189) ~[paper-1.20.1.jar:git-Paper-116]
  at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[paper-1.20.1.jar:git-Paper-116]
  at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
  at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugin(CraftServer.java:640) ~[paper-1.20.1.jar:git-Paper-116]
  at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugins(CraftServer.java:551) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:636) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:435) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:308) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1101) ~[paper-1.20.1.jar:git-Paper-116]
  at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:318) ~[paper-1.20.1.jar:git-Paper-116]
  at java.lang.Thread.run(Thread.java:833) ~[?:?]
[01:51:43] [Server thread/INFO]: [ChestShop] Disabling ChestShop v3.12.3-SNAPSHOT (build 389)

What other plugins are you running?

I am running this on three different servers and all three fail with the same reason and server version.

Agreements

• I have checked if there are already similar issues open.
• I am running the latest development version available from https://ci.minebench.de/job/ChestShop-3/.
• The version has support for this type of issue.
• I have provided all requested information and agree to the terms of the project's license

Additional context

I cannot replicate the issue on my localhost version. All the main game servers are in off-line mode as they run behind the Bungee (Waterfall) proxy.

I am at a loss as to what could be causing this, your help would be appreciated

[Phoenix616]

This kinda looks like the error is in the Minecraft/Paper server itself, not in the plugin. Not sure how muwh is doable there from the plugin's side.

[cobrex1]

OK, I will try an update to paper and see if that makes a difference. I had a feeling it might be there, but all searches didn't really help. Thanks for the response.

[cobrex1]

Hmmm, that didn't help using 118, still disabled. I will continue to search and see if I can find a solution. Frustrating.

[Phoenix616]

You could try older builds/versions and see when it works again. Or just report to Paper.

[cobrex1]

Yeh I think it is the number of checks being done by multiple plugins for offline players via the new auth process. I disabled combinations of plugins and it works with some and not with others. Spartan appears to take the biggest load but not sure why. I have Chestshop working now by disabling different plugins on different servers to ensure Chestshop is working.
Very strange and I don't fully understand it. AJLeaderboards and Citizens were possible culprits also - lol
Feel free to close this now but a useful reference for others

[cobrex1]

Thanks for the update with Mojang API, been through several re-boots now with all plugins enabled and appears to be working perfect, thank you.