NRE + Stacktrace

You may want to review updating this plugin with some additional NRE checks and also looking into the conflict between the plugin and rusts current decay system. You can recreate this stacktrace if you adjust your decay.scale to 3 or higher.

[2025.05.02 12:28:39] [ERRO] Unhandled error occurred (NullReferenceException)
  at BaseEntity.WorldSpaceBounds () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at BaseEntity.GetNearestBuildingPrivilege (System.Boolean cached, System.Single cacheDuration) (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at BaseEntity.GetBuildingPrivilege () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at DecayEntity.GetBuildingPrivilege () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.DecayEntity.OnDecay_Patch0(DecayEntity,Decay,single)
  at DecayEntity.DecayTick () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at ServerBuildingManager.Cycle () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at ServerMgr.Update () (at <18f552e21ad945a4ae7147de4e0152ee>:0)
  at UnityEngine.Debug:LogException(Exception, Object)
  at ServerMgr:Update()

This would play better with the current rust version:

block.Hurt(_damage, DamageType.Decay);

and this is what I think you are missing from your existing NRE checks:

!_block.IsValid()