i installed an eye receptor on an elf after this he couldnt eat anymore nor be fed

i got following message.

I removed facial stuff and all is fine now. so its a conflict with the elves mod?

JobDriver threw exception in initAction for pawn Zain driver=JobDriver_DoBill (toilIndex=13) driver.job=(DoBill (Job_2758352) A=Thing_LotRE_ElfStandardRace20071 B=Thing_AdvancedBionicEye299476 C=(228, 0, 200)) lastJobGiver=RimWorld.JobGiver_Work
System.NullReferenceException: Object reference not set to an instance of an object
at FacialStuff.PawnExtensions.CheckFaceForAddedParts (Verse.Hediff,FacialStuff.CompFace,Verse.BodyPartRecord,Verse.BodyPartRecord,Verse.BodyPartRecord) <0x00020>
at FacialStuff.PawnExtensions.CheckPart (System.Collections.Generic.List`1<Verse.BodyPartRecord>,Verse.Hediff,FacialStuff.CompFace,FacialStuff.CompBodyAnimator,bool) <0x0059c>
at FacialStuff.PawnExtensions.CheckForAddedOrMissingParts (Verse.Pawn) <0x0054d>
at FacialStuff.Harmony.HarmonyPatchesFS.ResolveAllGraphics_Postfix (Verse.PawnGraphicSet) <0x0004d>
at (wrapper dynamic-method) Verse.PawnGraphicSet.ResolveAllGraphics_Patch2 (object) <0x006c8>
at AlienRace.HarmonyPatches.CheckForStateChangePostfix (Verse.Pawn_HealthTracker) <0x00102>
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.CheckForStateChange_Patch1 (object,System.Nullable`1<Verse.DamageInfo>,Verse.Hediff) <0x008ab>
at Verse.Pawn_HealthTracker.AddHediff (Verse.Hediff,Verse.BodyPartRecord,System.Nullable`1<Verse.DamageInfo>,Verse.DamageWorker/DamageResult) <0x000c8>
at Verse.Pawn_HealthTracker.AddHediff (Verse.HediffDef,Verse.BodyPartRecord,System.Nullable`1<Verse.DamageInfo>,Verse.DamageWorker/DamageResult) <0x0007e>
at RimWorld.Recipe_InstallArtificialBodyPart.ApplyOnPawn (Verse.Pawn,Verse.BodyPartRecord,Verse.Pawn,System.Collections.Generic.List`1<Verse.Thing>,RimWorld.Bill) <0x003cd>
at RimWorld.Bill_Medical.Notify_IterationCompleted (Verse.Pawn,System.Collections.Generic.List`1<Verse.Thing>) <0x0008e>
at Verse.AI.Toils_Recipe/<FinishRecipeAndStartStoringProduct>c__AnonStorey2.<>m__0 () <0x00363>
at Verse.AI.JobDriver.TryActuallyStartNextToil () <0x0071f>

when they try to feed i got this message

JobDriver threw exception in initAction for pawn Tirdis driver=JobDriver_FoodFeedPatient (toilIndex=4) driver.job=(FeedPatient (Job_2764646) A=Thing_stirfry299774 B=Thing_LotRE_ElfStandardRace20071) lastJobGiver=RimWorld.JobGiver_Work
System.NullReferenceException: Object reference not set to an instance of an object
at FacialStuff.PawnExtensions.CheckFaceForAddedParts (Verse.Hediff,FacialStuff.CompFace,Verse.BodyPartRecord,Verse.BodyPartRecord,Verse.BodyPartRecord) <0x00020>
at FacialStuff.PawnExtensions.CheckPart (System.Collections.Generic.List`1<Verse.BodyPartRecord>,Verse.Hediff,FacialStuff.CompFace,FacialStuff.CompBodyAnimator,bool) <0x0059c>
at FacialStuff.PawnExtensions.CheckForAddedOrMissingParts (Verse.Pawn) <0x0054d>
at FacialStuff.Harmony.HarmonyPatchesFS.ResolveAllGraphics_Postfix (Verse.PawnGraphicSet) <0x0004d>
at (wrapper dynamic-method) Verse.PawnGraphicSet.ResolveAllGraphics_Patch2 (object) <0x006c8>
at AlienRace.HarmonyPatches.CheckForStateChangePostfix (Verse.Pawn_HealthTracker) <0x00102>
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.CheckForStateChange_Patch1 (object,System.Nullable`1<Verse.DamageInfo>,Verse.Hediff) <0x008ab>
at Verse.Pawn_HealthTracker.AddHediff (Verse.Hediff,Verse.BodyPartRecord,System.Nullable`1<Verse.DamageInfo>,Verse.DamageWorker/DamageResult) <0x000c8>
at RimWorld.IngestionOutcomeDoer_GiveHediff.DoIngestionOutcomeSpecial (Verse.Pawn,Verse.Thing) <0x00210>
at RimWorld.IngestionOutcomeDoer.DoIngestionOutcome (Verse.Pawn,Verse.Thing) <0x00059>
at Verse.Thing.Ingested (Verse.Pawn,single) <0x00191>
at RimWorld.Toils_Ingest/<FinalizeIngest>c__AnonStorey9.<>m__0 () <0x00404>
at Verse.AI.JobDriver.TryActuallyStartNextToil () <0x0071f>