Unable to connect to server if PacketEvents is installed (java.lang.NoSuchMethodError: net/kyori/adventure...)

[Chevels]

Describe the bug
As soon as PacketEvents is installed on the server, players can no longer connect and an error is generated in the console => https://pastebin.com/M5L01LtV

Software brand
Paper version git-Paper-309 (MC: 1.20.2) (Implementing API version 1.20.2-R0.1-SNAPSHOT) (Git: 2182d47)
(Latest 1.20.2 Paper release)

Plugins
Server Plugins (90):
[23:13:39 INFO]: Bukkit Plugins:
AdvancedPortals, *AdvancedReplay, *afkTerminator, AFKViewDistance, ajParkour, AntiAura-ESP, AntiCheatAddition, AntiGuest, BetterPortals, BlueMap
[23:13:39 INFO]: ChestProtect, Citizens, ClearLag, *ClientStats, CMI, CMILib, Codex, ConditionalCommands, ConsoleSpamFix, DeadlyDisasters
[23:13:39 INFO]: DiscordSRV, DiscordSRV-Staff-Chat, DragonSlayer, dynmap, EnchantmentLock, EntityDetection, Essentials, EssentialsAntiBuild, EssentialsSpawn, FarmControl
[23:13:39 INFO]: FastAsyncWorldEdit, floodgate, *ForcedGrammar, *FreeAutoMessage, FreedomChat, Geyser-Spigot, GrimAC, Hurricane, IllegalStack, Illusion
[23:13:39 INFO]: ImageFrame, InfernalMobs, InteractiveChat, InteractiveChatDiscordSrvAddon, Itemizer, *JLib, LeaderHeadsRevamped, LevelledMobs, Lib1711, LibsDisguises
[23:13:39 INFO]: LimitPillagers, LogBlock, LuckPerms, LWC, LWCTrust, MinecartCollisions, MobFarmManager, Multiverse-Core, Multiverse-Inventories, Multiverse-NetherPortals
[23:13:39 INFO]: MusicBox, NoCheatPlus, NoteBlockAPI, Orebfuscator, packetevents, PetMaster, PhatLoots, PlaceholderAPI, PlugManX, ProtocolLib
[23:13:39 INFO]: PublicCrafters, PvPManager, RandomEvents, RealisticSeasons, *RealPlugin, *RealTeleporter, *RedstoneClockDetector, *RelativeCoordCalculator, Vault, ViaBackwards
[23:13:39 INFO]: ViaVersion, ViaVersionStatus, ViewDistanceTweaks, War, *WDLCompanion, WGEF-Reborn, WorldBorder, WorldEditSelectionVisualizer, WorldGuard, ZeroTickFarmBlocker

How To Reproduce
Steps to reproduce the behavior:

1. Install PacketEvents 2.3.0 (same with the 2 previous versions...)
2. Start server (PacketEvents does not throw any errors and starts normally)
3. Try to connect to server
4. the server rejects us and shows an error in the console: https://pastebin.com/M5L01LtV

Expected behavior
Being able to play on the server while having PacketEvents installed^^

Screenshots
Client side error:

Additional context
We tried to connect with client versions from 1.20.1 to 1.20.6, but that doesn't change anything.

Originally I needed to install PacketEvents since the latest version of AntiCheatAddition needs it as a dependency (instead of ProtocolLib). This is the reason why I need to install PacketEvents.

[OakLoaf]

This is caused by the same thing as in #712 and is waiting on this PR #717

[AbhigyaKrishna]

This issue is unrelated to #717

[Chevels]

This issue is unrelated to #717

Ah! So this invalidates our discussions on the famous PR I suppose.

In this case, a clue perhaps? Where would the problem come from, PacketEvents? from AntiCheatAddition? Something else ?
The problem only occurs if the 2 are installed together; one without the other does not cause an error apart from ACA which does not work without PacketEvents.

Have a nice week end !

[AbhigyaKrishna]

I have identified the issue and have started working on it.

[Chevels]

This sounds good ! Thank you for your work :)