Hello im getting a repeating error in my debug log in game and it causing it to lag pretty hard. if you can add a fix that would be amazing! thanks in advance. Here is the error:

Exception printing TKKN_OldGrowth_PlantTreeOak69709 at (104, 0, 125): System.ArgumentNullException: Value cannot be null.
Parameter name: key
at System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) [0x00008] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Verse.StaticTextureAtlas.TryGetTile (UnityEngine.Texture texture, Verse.StaticTextureAtlasTile& tile) [0x00000] in <00638943358e4807bd44cd7bc8f572da>:0
at Verse.GlobalTextureAtlasManager.TryGetStaticTile (Verse.TextureAtlasGroup group, UnityEngine.Texture2D texture, Verse.StaticTextureAtlasTile& tile, System.Boolean ignoreFoundInOtherAtlas) [0x00023] in <00638943358e4807bd44cd7bc8f572da>:0
at Verse.Graphic.TryGetTextureAtlasReplacementInfo (UnityEngine.Material mat, Verse.TextureAtlasGroup group, System.Boolean flipUv, System.Boolean vertexColors, UnityEngine.Material& material, UnityEngine.Vector2[]& uvs, UnityEngine.Color32& vertexColor) [0x0006d] in <00638943358e4807bd44cd7bc8f572da>:0
at RimWorld.Plant.Print (Verse.SectionLayer layer) [0x00230] in <00638943358e4807bd44cd7bc8f572da>:0
at Verse.SectionLayer_ThingsGeneral.TakePrintFrom (Verse.Thing t) [0x00000] in <00638943358e4807bd44cd7bc8f572da>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.SectionLayer_ThingsGeneral:TakePrintFrom (Verse.Thing)
(wrapper dynamic-method) Verse.SectionLayer_Things:Verse.SectionLayer_Things.Regenerate_Patch0 (Verse.SectionLayer_Things)
Verse.Section:RegenerateLayers (Verse.MapMeshFlag)
Verse.MapDrawer:TryUpdateSection (Verse.Section)
Verse.MapDrawer:MapMeshDrawerUpdate_First ()
(wrapper dynamic-method) Verse.Map:Verse.Map.MapUpdate_Patch2 (Verse.Map)
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch3 (Verse.Game)
Verse.Root_Play:Update ()