Fixed! The plugin is now compatible with Godot 4.3 to 4.6. Please give the new version a try. ：）
Hi!
Sorry about that! This happens because the plugin uses EditorDock, which is only available in Godot 4.6+.
If you can upgrade to Godot 4.6, it should work right away.
But don't worry, I'm fixing this right now and will upload a compatibility patch very soon!
Thanks for reporting this!
