Console spam with error (/mute command)

[Evalutik]

When I write /mute, enter the player's nickname and press TAB, the plugin will give an error and spam the console (didn't check other commands)

What version of AdvancedBan (/AdvancedBan) are you using? 2.3.0

What kind of server do you have (Bungeecord/single server)? single server

What server version (/version) are you using? PurPur 1.19.3

Please provide the EXACT steps required to reproduce the problem...

1. type /mute
2. push TAB
3. push TAB

Any error/log post it through pastebin.com and link it here. (Also include /plugins/AdvancedBan/logs/latest.log)

latest.log server file: https://pastebin.com/yvEQT1XT
latest.log plugin file:
[20:14:27] Evalut is deleting a punishment
[20:14:27] Deleted punishment 28 from Evalutik punishment reason: &cnone
(that's it)

Error in console:

[20:15:49 ERROR]: Exception when Evalut attempted to tab complete mute Evalut
org.bukkit.command.CommandException: Unhandled exception during tab completion for command '/mute Evalut ' in plugin AdvancedBan v2.3.0
at org.bukkit.command.PluginCommand.tabComplete(PluginCommand.java:150) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.Command.tabComplete(Command.java:93) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.SimpleCommandMap.tabComplete(SimpleCommandMap.java:253) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_19_R2.CraftServer.tabCompleteCommand(CraftServer.java:2379) ~[purpur-1.19.3.jar:git-Purpur-1912]
at org.bukkit.craftbukkit.v1_19_R2.CraftServer.tabComplete(CraftServer.java:2351) ~[purpur-1.19.3.jar:git-Purpur-1912]
at org.bukkit.craftbukkit.v1_19_R2.command.BukkitCommandWrapper.getSuggestions(BukkitCommandWrapper.java:74) ~[purpur-1.19.3.jar:git-Purpur-1912]
at com.mojang.brigadier.tree.ArgumentCommandNode.listSuggestions(ArgumentCommandNode.java:71) ~[brigadier-1.0.18.jar:git-Purpur-1912]
at com.mojang.brigadier.CommandDispatcher.getCompletionSuggestions(CommandDispatcher.java:601) ~[purpur-1.19.3.jar:?]
at com.mojang.brigadier.CommandDispatcher.getCompletionSuggestions(CommandDispatcher.java:581) ~[purpur-1.19.3.jar:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleCustomCommandSuggestions$5(ServerGamePacketListenerImpl.java:939) ~[?:?]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153) ~[?:?]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[?:?]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1368) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:197) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126) ~[?:?]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1345) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1338) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136) ~[?:?]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1316) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1204) ~[purpur-1.19.3.jar:git-Purpur-1912]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:321) ~[purpur-1.19.3.jar:git-Purpur-1912]
at java.lang.Thread.run(Thread.java:1589) ~[?:?]
Caused by: java.lang.NullPointerException: Cannot invoke "org.bukkit.configuration.ConfigurationSection.getKeys(boolean)" because the return value of "org.bukkit.configuration.file.YamlConfiguration.getConfigurationSection(String)" is null
at me.leoko.advancedban.bukkit.BukkitMethods.getKeys(BukkitMethods.java:115) ~[AdvancedBan-Bundle-2.3.0-RELEASE.jar:?]
at me.leoko.advancedban.utils.tabcompletion.PunishmentTabCompleter.onTabComplete(PunishmentTabCompleter.java:54) ~[AdvancedBan-Bundle-2.3.0-RELEASE.jar:?]
at me.leoko.advancedban.bukkit.BukkitMethods.lambda$setCommandExecutor$2(BukkitMethods.java:169) ~[AdvancedBan-Bundle-2.3.0-RELEASE.jar:?]
at org.bukkit.command.PluginCommand.tabComplete(PluginCommand.java:138) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
... 22 more

Add any additional information below.

[Evalutik]

all my plugins

[Hopefuls]

a configuration file seems to be malformed within your advancedban installation. The error does not mention what issue, so I might suggest resetting your configuration while keeping a backup of it to see if thats the issue or not.

Another reason that might cause this is by removing relevant configuration sections. Keep in mind that you still need to have all unused configuration sections still present.