Failed to call hook 'OnServerSave' on plugin 'CarRadio v1.0.69' (NullReferenceException: )
  at (wrapper managed-to-native) UnityEngine.Component.GetComponentFastPath(UnityEngine.Component,System.Type,intptr)
  at UnityEngine.Component.GetComponent[T] () [0x00021] in <f90b5d60566c42cc8b1d1412300b3616>:0
  at Oxide.Plugins.CarRadio.OnServerSave () [0x0001f] in <5bd3625d82fa49e1b811a05413457590>:0
                                                                                                                             0b/s in, 0b/s out
  at Oxide.Plugins.CarRadio.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00443] in <5bd3625d82fa49e1b811a05413457590>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <87ce9ac9776a48658bc55eae6debe38b>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cd7231f30b444d86bc6cca8a53cdd2ea>:0
F

I just came here to report the same thing.