Crash on Autosave

Have been experiencing a lot of crashes when the game autosaves. Unmodded game. Log below

NullReferenceException: Object reference not set to an instance of an object

SaveLoadRoot.SaveWithoutTransform (System.IO.BinaryWriter writer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
SaveLoadRoot.Save (System.IO.BinaryWriter writer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
SaveManager.Write (Tag key, System.Collections.Generic.List`1[T] value, System.IO.BinaryWriter writer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
SaveManager.Save (System.IO.BinaryWriter writer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
SaveLoader.Save (System.IO.BinaryWriter writer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
SaveLoader.Save (System.String filename, System.Boolean isAutoSave, System.Boolean updateSavePointer) (at <81e516d9c2bc49608bcac24a555d88de>:0)
Game+<DelayedSave>d__207.MoveNext () (at <81e516d9c2bc49608bcac24a555d88de>:0)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at <f54de29543b44ca89695b41bc5ecd6e0>:0)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
LogCatcher:UnityEngine.ILogHandler.LogException(Exception, Object)
UnityEngine.Debug:CallOverridenDebugHandler(Exception, Object)

Build: U58-722606-SCRPN

I can't find the player log, it's not in %appdata%, and running a search of the pc finds nothing