Can't run dedicated local server after new update

[Phase96]

Before the update it worked and now I get this message:

Couldn't load server/5380898/proceduralmap.1000.5.176.sav - file doesn't exist
Couldn't load server/5380898/proceduralmap.1000.5.176.sav - file doesn't exist

(Filename: C:\buildslave\unity\build\Runtime/Export/Debug.bindings.h Line: 45)

NullReferenceException: Object reference not set to an instance of an object
NullReferenceException: Object reference not set to an instance of an object
  at BaseNetworkable.OnNetworkGroupChange () [0x00026] in <584710f10c08444daeaa195be71e210c>:0
  at Network.Networkable.SwitchGroup (Network.Visibility.Group newGroup) [0x000a9] in <51a9e16b84dc43c98a57a840e29344e2>:0
  at BaseEntity.UpdateNetworkGroup () [0x00048] in <584710f10c08444daeaa195be71e210c>:0
  at BaseNetworkable.Spawn () [0x00041] in <584710f10c08444daeaa195be71e210c>:0
  at BaseEntity.Spawn () [0x00000] in <584710f10c08444daeaa195be71e210c>:0
  at SpawnGroup.Spawn (System.Int32 numToSpawn) [0x0005e] in <584710f10c08444daeaa195be71e210c>:0
  at SpawnGroup.Spawn () [0x00014] in <584710f10c08444daeaa195be71e210c>:0
  at SpawnGroup.SpawnInitial () [0x0001e] in <584710f10c08444daeaa195be71e210c>:0
  at SpawnHandler.InitialSpawn () [0x0005f] in <584710f10c08444daeaa195be71e210c>:0
  at ServerMgr.Initialize (System.Boolean loadSave, System.String saveFile, System.Boolean allowOutOfDateSaves, System.Boolean skipInitialSpawn) [0x00082] in <584710f10c08444daeaa195be71e210c>:0
  at Bootstrap+<StartServer>d__17.MoveNext () [0x001eb] in <584710f10c08444daeaa195be71e210c>:0
  at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00027] in <945c24c342914372bc599495ca1ade0d>:0

(Filename: <584710f10c08444daeaa195be71e210c> Line: 0)