Server crash while pre generating the world with the following
Critical error detected whilst generating Structure dungeons_enhanced:mob_tower

Version Info:

• Minecraft version: 1.16.5
• Forge version 36.2.19
• Mod Version 1.3

Screenshots

Additional context
Crash Report
crash-2021-12-28_14.32.15-server.txt

Let me know if this is unrelated to the mod

Try updating Forge (36.2.22) and Dungeons Enhanced (1.4). With these versions everything worked. It's also possible that another mod is related to this issue. I only tested Dungeons Enhanced with Terraforged.