Error to crash

My server got spammed with this error in console then it crashed my server:

 

(14:06:54) | [Oxide] 14:06 [Error] Exception while calling NextTick callback (NullReferenceException: )
  at (wrapper managed-to-native) UnityEngine.Object.GetName(UnityEngine.Object)
  at UnityEngine.Object.get_name () [0x00001] in <0b31faaf1c50461d95c83ac166a20393>:0 
  at Oxide.Plugins.BackToTheWild+<OnEntitySpawned>c__AnonStorey0.<>m__0 () [0x00000] in <dc92f6f793f04c568e6ee8a52e25c537>:0 
  at (wrapper dynamic-method) Oxide.Core.OxideMod.OnFrame_Patch0(object,single)

this is at the startup , this should not be the problem of the crash but a result of a incomplete startup i will build in a delay and check if startup is completed changing animal variables.
Do make sure the animal spawnrates are not high since some servers cannot cope with a big animal population (hardware)

HArdware wouldn't be the issue, i own the hardware, and its far more powerful than needed for any rust server. But this error occured not at start up, but right before the server crashed and restarted itself.