As mentioned here, nether worlds generated with CityWorld come with only empty chests.

I am creating a server based on a nether CityWorld, and cannot think of any option other than a fix for this plugin.

Spigot 1.12.2.

Let me know if you need more details. Thank you.

Humm… that is odd. Let me take a look and see what can be done.

(sorry for the delay but it has been a busy year)