My yautja mod sometimes pings this error and I'm not sure why, hoping it means something to you

System.NullReferenceException: Object reference not set to an instance of an object
[Ref 8F22B72B]
at Verse.Map.get_ParentHolder () [0x00000] in <cb53cd4422904947932d33f561ad8d15>:0
at Verse.ThingOwnerUtility.GetRootTile (Verse.IThingHolder holder) [0x00023] in <cb53cd4422904947932d33f561ad8d15>:0
at Verse.Thing.get_Tile () [0x00022] in <cb53cd4422904947932d33f561ad8d15>:0
at RimWorld.GenLocalDate.LocationForDate (Verse.Thing thing) [0x00000] in <cb53cd4422904947932d33f561ad8d15>:0
at RimWorld.GenLocalDate.Season (Verse.Thing thing) [0x00005] in <cb53cd4422904947932d33f561ad8d15>:0
at EBSGFramework.EBSGUtilities.CheckSeason (Verse.Pawn pawn, System.Collections.Generic.List`1[T] seasons, System.Boolean defaultActive) [0x0000a] in <005fe1e0dd7142fdbe208ea5c0dc4e5f>:0
at EBSGFramework.ConditionalStatAffecter_Season.Applies (RimWorld.StatRequest req) [0x00010] in <005fe1e0dd7142fdbe208ea5c0dc4e5f>:0
at RimWorld.StatWorker.GetValueUnfinalized (RimWorld.StatRequest req, System.Boolean applyPostProcess) [0x00479] in <cb53cd4422904947932d33f561ad8d15>:0
- TRANSPILER OskarPotocki.VEF: IEnumerable`1 VEF.Apparels.VanillaExpandedFramework_StatWorker_GetValueUnfinalized_Transpiler:Transpiler(IEnumerable`1 instructions)
- TRANSPILER vanillaexpanded.skills: IEnumerable`1 VSE.Expertise.ExpertisePatches:StatTranspiler(IEnumerable`1 instructions, ILGenerator generator)
at RimWorld.StatWorker.GetValue (RimWorld.StatRequest req, System.Boolean applyPostProcess) [0x00043] in <cb53cd4422904947932d33f561ad8d15>:0
at RimWorld.StatWorker.GetValue (Verse.Thing thing, System.Boolean applyPostProcess, System.Int32 cacheStaleAfterTicks) [0x0007c] in <cb53cd4422904947932d33f561ad8d15>:0
at RimWorld.StatExtension.GetStatValue (Verse.Thing thing, RimWorld.StatDef stat, System.Boolean applyPostProcess, System.Int32 cacheStaleAfterTicks) [0x0000c] in <cb53cd4422904947932d33f561ad8d15>:0
- POSTFIX OskarPotocki.VanillaSocialInteractionsExpanded: Void VanillaSocialInteractionsExpanded.GetStatValue_Patch:Postfix(Thing thing, StatDef stat, Boolean applyPostProcess, Single& __result)
at VEF.AestheticScaling.CachedPawnData.RegenerateCache () [0x001a0] in <62ca397010b74d5ca2062e4a2a9049aa>:0
at VEF.AestheticScaling.DictCache`2[T,V].GetCache (T key, System.Boolean& newEntry, System.Boolean forceRefresh, System.Boolean canRefresh) [0x0003d] in <62ca397010b74d5ca2062e4a2a9049aa>:0
at VEF.AestheticScaling.PawnDataCache.GetPawnDataCache (Verse.Pawn pawn, System.Boolean forceRefresh, System.Boolean canRefresh) [0x0001d] in <62ca397010b74d5ca2062e4a2a9049aa>:0
at VEF.AestheticScaling.CachedPawnDataSlowUpdate.GameComponentTick () [0x000bf] in <62ca397010b74d5ca2062e4a2a9049aa>:0
at Verse.GameComponentUtility.GameComponentTick () [0x00017] in <cb53cd4422904947932d33f561ad8d15>:0

Errors like this also accompany it, but I'm not sure if they're related or not.
Object with load ID Thing_Human67889 is referenced (xml node name: li) but is not deep-saved. This will cause errors during loading.
Object with load ID Gene_0 is referenced (xml node name: overriddenByGene) but is not deep-saved. This will cause errors during loading.

Full log: https://gist.github.com/HugsLibRecordKeeper/d4e8f6f1f19ad1c087dfd65710b3d07b