What behaviour is observed?

When i start up my server, i recieve this log:
[12:14:13 WARN]: Nag author(s): '[sgdc3, games647, Hex3l, krusic22]' of 'AuthMe v5.6.0-bCUSTOM' about their usage of System.out/err.print. Please use your plugin's logger instead (JavaPlugin#getLogger).

Expected behaviour

The plugin should use JavaPlugin#getLogger ( https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/plugin/java/JavaPlugin.html#getLogger() )

To Reproduce

Run the plugin :)

Plugin list

§xℹ Server Plugins (17):
§xPaper Plugins (1):

• AuthMeVelocity
  §xBukkit Plugins (16):
• ajQueue, AuthMe, Essentials, EssentialsChat, EssentialsProtect, EssentialsSpawn, Hubbly, LuckPerms, PlaceholderAPI, ServersNPC
  SkinsRestorer, TAB, Vault, ViaBackwards, ViaRewind, ViaVersion

Server Implementation

BungeeCord

Database Implementation

MySQL

AuthMe Version

AuthMeReloader v5.6.0 (Build: CUSTOM)

Error log (if applicable)

No response

Configuration

i dont think its relavent

Interesting, I can't find any usages of System.out or System.err in non-test files. Maybe some dependency is using System.out?

附议