LangUtils currently do not translate fields from Statistics:
https://hub.spigotmc.org/javadocs/spigot/org/bukkit/Statistic.html

It would be nice if this plugin included these texts.

Please do not remove this.

Extra-TAG: tag_r72EhIAL

When a name in the language requested does not exist, the name will be

retrieved in this language. The default fall back language is English.

FallbackLanguage: zh_cn

If you want to enable the loading of a language, add it to the following list

LoadLanguage: [zh_cn, zh_tw, ko_kr, ja_jp, fr_fr, ru_ru]

Or

LoadLanguage:
- zh_cn
- cs_cz
- de_de
- es_es
- fr_fr
- hu_hu
- id_id
- it_it
- ja_jp
- ko_kr
- lv_lv
- pl_pl
- pt_br
- ro_ro
- ru_ru
- tr_tr
- vi_vn
- zh_tw

If you want to load all the languages, add "all" to the list:

- all

16:48:12] [Server thread/INFO]: [LangUtils] Enabling LangUtils v3.2.3
[16:48:15] [Server thread/ERROR]: Biome name custom is missing in fallback language zh_cn.
[16:48:15] [Server thread/INFO]: [LangUtils] cs_cz - ?e?tina (?esko) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] de_de - Deutsch (Deutschland) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] es_es - Espa?ol (Espa?a) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] fr_fr - Fran?ais (France) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] hu_hu - Magyar (Magyarország) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] id_id - Bahasa Indonesia (Indonesia) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] it_it - Italiano (Italia) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] ja_jp - 日本語 (日本) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] ko_kr - ??? (????) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] lv_lv - Latvie?u (Latvija) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] pl_pl - Polski (Polska) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] pt_br - Português (Brasil) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] ro_ro - Rom?n? (Rom?nia) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] ru_ru - Русский (Россия) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] tr_tr - Türk?e (Türkiye) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] vi_vn - Ti?ng Vi?t (Vi?t Nam) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] zh_cn - 简体中文 (**) has been loaded.
[16:48:15] [Server thread/INFO]: [LangUtils] zh_tw - 繁體中文 (台灣) has been loaded.

伺服器使用中文（台灣）設定，顯示生態域自訂名稱缺失
[21:46:57 ERROR]: Biome name custom is missing in fallback language zh_tw.

This plugin does not translate World.Environment fields.

https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/World.Environment.html

It would be nice if it would be included.