2023-02-07 18:47:19: WARNING[Server]: LuaEntitySAO::step() id=10801 is attached to nonexistent parent. This is a bug.
2023-02-07 18:47:25: WARNING[Server]: ScriptApiBase::objectrefGetOrCreate(): Pushing ObjectRef to removed/deactivated object, this is probably a bug.
I suppose this is caused by a mod that keeps ObjectRefs outside of callbacks, resulting in calls to invalid objects. From what I can see, `obj:set_attach`, `obj:get_attach()` and `obj:get_children()` do not check whether the object is about to be deleted, which then results in such odd warnings.
Feel free to open an issue about that - or even better - a bugfix PR if you can confirm that it's indeed caused by these functions.