seen this a couple times the other day, the player had 200 ping

Failed to run a 15.00 timer in 'NTeleportation v1.6.5' (NullReferenceException: Object reference not set to an instance of an object)
  at BaseEntity.ForceUpdateTriggers (System.Boolean enter, System.Boolean exit, System.Boolean invoke) [0x00157] in <c98fead53f7a4359a28f073b214dae88>:0
  at Oxide.Plugins.NTeleportation.Teleport (BasePlayer player, UnityEngine.Vector3 newPosition, System.Boolean allowTPB) [0x0010e] in <4c57aa684f194142af3c7b465f6b0624>:0
  at Oxide.Plugins.NTeleportation+<CommandTeleportAccept>c__AnonStorey5.<>m__0 () [0x004a8] in <4c57aa684f194142af3c7b465f6b0624>:0
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <9882f28dc2204b4dba514a9ad18f5042>:0