Legacy formatting codes doesn't support

[Gaegeumchi]

When I run the command, the connection is disconnected and an unsupported format is output.

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. §eRight Click to place§7 - §eLeft Click to cancel