Problem/Bug Annoying "world" tag is next to my name.

Hey, I'm pretty new to plugins. I recently made an Aternos server for me and some people to play on. I have a couple plugins on it, by couple I mean like 20. Ever since I got them, i've been noticing a weird green "world" tag next to everyone's name. I don't know which plugin is causing it or how to fix it. It Looks like this:
world Pandacatgamer: Hello
These are my plugins:
Actionbar
Actionbar.jar
ActionHealth
ActionHealth.jar
Admin Powertools v2.5.jar
AdvancedFirework
AdvancedFirework_1.6.0.jar
ArmorEffects.jar
ArmorSetBonus
ArmorSetBonus-2.2.1.jar
BetterPortals
BetterPortals-0.4.jar
bStats
Citizens
Citizens.jar
ClearLag
Clearlag.jar
CreativeGates.jar
CustomStructures
CustomStructures.jar
DisguiseCraft.jar
GCore
GCore.jar
GParticles
GParticles.jar
HolographicDisplays
HolographicDisplays.jar
KingdomWands.jar
LuckPerms
LuckPerms-Bukkit-5.1.93.jar
MassiveCore
MassiveCore.jar
Morph-2.17.jar
MuteChat
MuteChat.jar
MyWarp
mywarp-bukkit-3.1-all.jar
OpenInv
OpenInv.jar
ParachutePlus
ParachutePlus.jar
Player Tracker 1.4.1.jar
PluginMetrics
PotionArmour
PotionArmour.jar
PowerRanks
PowerRanks.jar
Trade
Trade-0.0.9.jar
TrollCommandsPlusPlus-7.29.55.jar
TrollCommandsPlusPlus-7.29.56.jar
UberEnchant
UberEnchant.jar
Updater
WorldEdit
worldedit-bukkit-7.1.0.jar
WorldGuard
worldguard-bukkit-7.0.3.jar

PLEASE HELP ME IT'S SO ANNOYING!!!!

 

It's probably your chat plugin. Check LuckPerms's chat section in config, or whatever chat plugin you have.