Failed to run a 20.00 timer in 'ChopperSurvival v0.2.83' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.ChopperSurvival+CSHelicopter.SpawnHelicopter (UnityEngine.Vector3 targetPos, System.Single rotor, System.Single tail, System.Single engine, System.Single body, System.Single damage) [0x000b1] in <97dfc9cbfb084b3a882fb3d73b3eda2b>:0
  at Oxide.Plugins.ChopperSurvival.SpawnHelicopter (System.Int32 num) [0x0006f] in <97dfc9cbfb084b3a882fb3d73b3eda2b>:0
  at Oxide.Plugins.ChopperSurvival.SpawnWave () [0x0006a] in <97dfc9cbfb084b3a882fb3d73b3eda2b>:0
  at Oxide.Plugins.ChopperSurvival.<StartRounds>m__1 () [0x00000] in <97dfc9cbfb084b3a882fb3d73b3eda2b>:0
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <cf88a28c7fb44d36890d85a78331cc9d>:0