Hi, I get these errors in console every now and then, does anyone know what is causing these errors?

Without seeing the full error, there isn't much to go on. You'd need to check your output_log file or whatever -logfile is set to in your startup; else set it if it isn't.

I think this is it.

(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)

NullReferenceException: Object reference not set to an instance of an object
  at BuildingBlock.GetGrade (BuildingGrade+Enum iGrade) [0x00000] in <778b74411d8940c39a9b89407fd432a6>:0 
  at BuildingBlock.get_currentGrade () [0x00000] in <778b74411d8940c39a9b89407fd432a6>:0 
  at BuildingBlock.MaxHealth () [0x00000] in <778b74411d8940c39a9b89407fd432a6>:0 
  at Oxide.Plugins.RemoverTool.IsFractioned (BaseEntity entity) [0x00095] in <b834d76ff3674e8489fd93ffaa4952dc>:0 
  at Oxide.Plugins.RemoverTool.CanRemoveEntity (BasePlayer player, Oxide.Plugins.RemoverTool+RemoveType removeType, BaseEntity TargetEntity, System.Boolean shouldPay, System.String& Reason) [0x00099] in <b834d76ff3674e8489fd93ffaa4952dc>:0 
  at Oxide.Plugins.RemoverTool.GUIAuthorizationUpdate (BasePlayer player, Oxide.Plugins.RemoverTool+RemoveType removeType, BaseEntity TargetEntity, System.Boolean shouldPay) [0x00021] in <b834d76ff3674e8489fd93ffaa4952dc>:0 
  at Oxide.Plugins.RemoverTool+ToolRemover.RemoveUpdate () [0x00076] in <b834d76ff3674e8489fd93ffaa4952dc>:0 
 
(Filename: <778b74411d8940c39a9b89407fd432a6> Line: 0)​