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Updates

The plugin is now fully compatible with Minecraft versions 1.21 to 1.21.8 (latest available).
It now automatically handles resource pack generation for both the old format (1.21–1.21.3) and the new format introduced in 1.21.4+.

The README.md file has also been updated with the latest compatibility notes.

Warning

Resource packs generated for Minecraft 1.21 to 1.21.3 are not compatible with versions 1.21.4 and above due to internal changes in how Minecraft handles assets.

If you're updating your server from 1.21-1.21.3 to 1.21.4 or later, your current resource pack will no longer work properly.

There’s no need to save your old token or downloadPackURL.
Instead, reinstall the plugin from scratch: delete its folder, install the latest version, and follow the setup steps again.