: Many iron farm designs from 1.14 broke in 1.16 due to changes in how villagers "panic" to summon golems.

Updating a world or server across these versions is a massive jump in game logic and world generation.

: Your 1.14 Nether is likely a barren wasteland. Upgrading to 1.17 transforms the Nether into a vibrant dimension with biomes like Crimson Forests and Basalt Deltas.

Is this a you downloaded, or a backup of your own server?