Formatted colour code didn't behave correctly

[ShiYan2022]

Expected behavior

Formatted colour code behave properly like below

Observed/Actual behavior

The colour code haven't been transferred like below

Steps/models to reproduce

write a customized plugin, then run paper

Plugin and Datapack List

Only my customized plugin

Paper version

This server is running Paper version 1.21.4-231-ver/1.21.4@09e9afd (2025-05-19T17:59:36Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT)

Other

code is here

[electronicboy]

The logger doesn't support using minecraft formatting colors, use the component logger

[ShiYan2022]

The logger doesn't support using minecraft formatting colors, use the component logger

ok, thanks for your response