Compatibility problems on Spigot 1.20.1

[Figishe]

Hi, I'm trying to use the API on Spigot 1.20.1, but it won't work.

Here is an error from the startup log:

[09:47:00] [Server thread/INFO]: [ProtocolLib] Loading ProtocolLib v5.0.0
[09:47:00] [Server thread/WARN]: [ProtocolLib] Version (MC: 1.20.1) has not yet been tested! Proceed with caution.
[09:47:02] [Server thread/INFO]: [I18N] Loading I18N v1.4.0
...
[09:47:02] [Server thread/INFO]: [ProtocolLib] Enabling ProtocolLib v5.0.0
[09:47:02] [Server thread/INFO]: [I18N] Enabling I18N v1.4.0
[09:47:02] [Server thread/INFO]: [I18N] Set fallback locale to English
[09:47:02] [Server thread/ERROR]: [I18N] Failed to instantiate interceptors: this build supports Minecraft versions 1.8 - 1.12; please consider upgrading to the latest version

After that, no further exceptions are thrown, even on localizer.translateDirect(playerLocale, messageUid, args) calls. But it uses the fallback language only (English).

Also when I'm trying to use command /language sr_sp, it says 'Failed to set your preferred language!', argument does not matter.

[cieldeville]

Dear Figishe,

unfortunately I have not updated this plugin in six years and currently do not have the resources to do so either. Feel free to update the plugin yourself - doing so will require knowledge of Minecraft's internal networking packets, though.

Sorry I cannot help you any further - thank you for your interest in this project!

Best regards,
Ciel