What's new?
On 1.21, registering custom entities did not work properly on Spigot specifically, which could send multiple warnings to the console. This new update resolves that, and PetDragons should still be persistent (i.e. exist across restarts/chunk unloads etc). If something does not work, please let me know in the discussion thread or via private message. For Paper this update should not have relevant changes.

How to update?
Download the jar file from the top of this page and put it in your plugins folder. Make sure to remove the previous version of this plugin. Now restart (not reload) your server and you are done!