Exception loading UnityEngine.AudioClip from file.
absFilePath: D:\Steam\steamapps\workshop\content\294100\2819334265\Sounds\UnitResponse\Female2\PawnIsDowned1.wav
Exception: System.ArgumentNullException: Value cannot be null.
Parameter name: key
at System.Collections.Generic.Dictionary`2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) [0x00008] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Collections.Generic.Dictionary`2[TKey,TValue].set_Item (TKey key, TValue value) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at RuntimeAudioClipLoader.Manager.SetAudioClipLoadState (UnityEngine.AudioClip audioClip, UnityEngine.AudioDataLoadState newLoadState) [0x00000] in <81af9f8a18324e17b286924a43555a7c>:0
at RuntimeAudioClipLoader.Manager.Load (System.IO.Stream dataStream, RuntimeAudioClipLoader.AudioFormat audioFormat, System.String unityAudioClipName, System.Boolean doStream, System.Boolean loadInBackground, System.Boolean diposeDataStreamIfNotNeeded) [0x00187] in <81af9f8a18324e17b286924a43555a7c>:0
at Verse.ModContentLoader`1[T].LoadItem (RimWorld.IO.VirtualFile file) [0x000db] in <81af9f8a18324e17b286924a43555a7c>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.ModContentLoader`1<UnityEngine.AudioClip>:LoadItem (RimWorld.IO.VirtualFile)
Verse.ModContentLoader`1/<LoadAllForMod>d__4<UnityEngine.AudioClip>:MoveNext ()
Verse.ModContentHolder`1<UnityEngine.AudioClip>:ReloadAll ()
Verse.ModContentPack:ReloadContentInt ()
Verse.LongEventHandler:ExecuteToExecuteWhenFinished ()
Verse.LongEventHandler:UpdateCurrentAsynchronousEvent ()
Verse.LongEventHandler:LongEventsUpdate (bool&)
(wrapper dynamic-method) Verse.Root:Verse.Root.Update_Patch1 (Verse.Root)
Verse.Root_Entry:Update ()

It is appear even if i start a clean save with 0 mods.