Structure Spawn condition not working

Summary

The structure condition doesnt work when trying to spawn mobs with randomspawn

Steps to reproduce

Just put the structure condition in any mob spawn and when approaching that structure, the console will be spammed with the error

Current behavior

I wanted to spawn a mythicmob in a certain structure (ancient city) but i get this error whenever im near one.

Intended correct behavior

The mob only spawns in that certain structure

Server log

[Legacy attachment omitted]

Spawn config

possessed_aztec_armor_spawn:
  Type: possessed_aztec_armor
  Worlds: world
  Action: ADD
  Chance: 0.08
  Priority: 50
  Conditions:
  - mobsInRadius{types=possessed_aztec_armor;amount<2;radius=15}
  - structure{s=minecraft:ancient_city} true