Losing connection due to unsupported legacy codes (default configs)

[Elijeh]

Using Paper 1.21.4 (latest) and mcMM0 2.2.029

[15:13:07 INFO]: Elijeh lost connection: Internal Exception: net.kyori.adventure.text.minimessage.internal.parser.ParsingExceptionImpl: Legacy formatting codes have been detected in a MiniMessage string - this is unsupported behaviour. Please refer to the Adventure documentation (https://docs.advntr.dev) for more information.
§lMining increased to §r§a§l2§r§f.