My smelter was working perfectly fine and then suddenly today I got this weird error and the inputers and outputers all deleted and refuse to allow me to remake them. Here is the error

Exception in JobDriver tick for pawn Builder ♥♥♥ 116 driver=JobDriver_ConstructFinishFrame (toilIndex=1) driver.job=(FinishFrame (Job_5832267) A=Thing_Frame_Inputer2783533) lastJobGiver=AIRobot.X2_JobGiver_Work
System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.CompAffectedByFacilities.CanPotentiallyLinkTo_Static (Verse.ThingDef,Verse.IntVec3,Verse.Rot4,Verse.ThingDef,Verse.IntVec3,Verse.Rot4) <0x0008f>
at RimWorld.CompAffectedByFacilities.CanPotentiallyLinkTo_Static (Verse.Thing,Verse.ThingDef,Verse.IntVec3,Verse.Rot4) <0x0008d>
at RimWorld.CompAffectedByFacilities/<PotentialThingsToLinkTo>c__Iterator1.MoveNext () <0x00609>
at RimWorld.CompAffectedByFacilities/<>c__Iterator0.MoveNext () <0x00267>
at RimWorld.CompAffectedByFacilities.LinkToNearbyFacilities () <0x00129>
at RimWorld.CompAffectedByFacilities.PostSpawnSetup (♥♥♥♥) <0x0001c>
at Verse.ThingWithComps.SpawnSetup (Verse.Map,♥♥♥♥) <0x0007f>
at Verse.Building.SpawnSetup (Verse.Map,♥♥♥♥) <0x0008d>
at RimWorld.Stove_Inputer.SpawnSetup (Verse.Map,♥♥♥♥) <0x0002a>
at (wrapper dynamic-method) Verse.GenSpawn.Spawn_Patch2 (Verse.Thing,Verse.IntVec3,Verse.Map,Verse.Rot4,Verse.WipeMode,♥♥♥♥) <0x00b7b>
at Replace_Stuff.DestroyedRestore.ReviveBuilding.CheckForRevival (Verse.Thing,Verse.IntVec3,Verse.Map,Verse.Rot4,Verse.WipeMode,♥♥♥♥) <0x0005e>
at (wrapper dynamic-method) RimWorld.Frame.CompleteConstruction_Patch2 (object,Verse.Pawn) <0x0059e>
at RimWorld.JobDriver_ConstructFinishFrame/<MakeNewToils>c__Iterator0/<MakeNewToils>c__AnonStorey1.<>m__1 () <0x00396>
at (wrapper dynamic-method) Verse.AI.JobDriver.DriverTick_Patch1 (object) <0x004c8>

Verse.Log:Error(String, Boolean)
Verse.AI.JobUtility:TryStartErrorRecoverJob(Pawn, String, Exception, JobDriver)
Verse.AI.JobDriver:DriverTick_Patch1(Object)
Verse.AI.Pawn_JobTracker:JobTrackerTick()
Verse.Pawn:Tick_Patch2(Object)
AIRobot.X2_AIRobot:Tick()
Verse.TickList:Tick()
Verse.TickManager:DoSingleTick()
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update_Patch1(Object)

and this one
Exception in BreadthFirstTraverse: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.CompAffectedByFacilities.CanPotentiallyLinkTo_Static (Verse.ThingDef facilityDef, IntVec3 facilityPos, Rot4 facilityRot, Verse.ThingDef myDef, IntVec3 myPos, Rot4 myRot) [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities.CanPotentiallyLinkTo_Static (Verse.Thing facility, Verse.ThingDef myDef, IntVec3 myPos, Rot4 myRot) [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities+<PotentialThingsToLinkTo>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities+<>c__Iterator0.MoveNext () [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities.LinkToNearbyFacilities () [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities.RelinkAll () [0x00000] in <filename unknown>:0
at RimWorld.CompAffectedByFacilities.Notify_LOSBlockerSpawnedOrDespawned () [0x00000] in <filename unknown>:0
at RimWorld.FacilitiesUtility+<NotifyFacilitiesAboutChangedLOSBlockers>c__AnonStorey0.<>m__0 (Verse.Region x) [0x00000] in <filename unknown>:0
at Verse.RegionTraverser+BFSWorker.BreadthFirstTraverseWork (Verse.Region root, Verse.RegionEntryPredicate entryCondition, Verse.RegionProcessor regionProcessor, Int32 maxRegions, RegionType traversableRegionTypes) [0x00000] in <filename unknown>:0
at Verse.RegionTraverser.BreadthFirstTraverse (Verse.Region root, Verse.RegionEntryPredicate entryCondition, Verse.RegionProcessor regionProcessor, Int32 maxRegions, RegionType traversableRegionTypes) [0x00000] in <filename unknown>:0
Verse.Log:Error(String, Boolean)
Verse.RegionTraverser:BreadthFirstTraverse(Region, RegionEntryPredicate, RegionProcessor, Int32, RegionType)
RimWorld.FacilitiesUtility:NotifyFacilitiesAboutChangedLOSBlockers(List`1)
Verse.Room:Notify_RoomShapeOrContainedBedsChanged()
Verse.RegionAndRoomUpdater:NotifyAffectedRoomsAndRoomGroupsAndUpdateTemperature()
Verse.RegionAndRoomUpdater:CreateOrUpdateRooms()
Verse.RegionAndRoomUpdater:TryRebuildDirtyRegionsAndRooms()
Verse.RegionGrid:GetValidRegionAt(IntVec3)
Verse.RegionAndRoomQuery:RegionAt(IntVec3, Map, RegionType)
Verse.RegionAndRoomQuery:RoomAt(IntVec3, Map, RegionType)
Verse.RegionAndRoomQuery:RoomGroupAt(IntVec3, Map)
Verse.GridsUtility:GetRoomGroup(IntVec3, Map)
Verse.GenTemperature:TryGetDirectAirTemperatureForCell(IntVec3, Map, Single&)
Verse.GenTemperature:TryGetTemperatureForCell(IntVec3, Map, Single&)
Verse.GenTemperature:GetTemperatureForCell(IntVec3, Map)
RimWorld.StatPart_WorkTableTemperature:Applies(ThingDef, Map, IntVec3)
RimWorld.StatPart_WorkTableTemperature:Applies(Thing)
RimWorld.StatPart_WorkTableTemperature:TransformValue(StatRequest, Single&)
RimWorld.StatWorker:FinalizeValue(StatRequest, Single&, Boolean)
RimWorld.StatWorker:GetValue(StatRequest, Boolean)
RimWorld.StatWorker:GetValue(Thing, Boolean)
RimWorld.StatExtension:GetStatValue_Patch2(Thing, StatDef, Boolean)
Verse.AI.<DoRecipeWork>c__AnonStorey1:<>m__1()
Verse.AI.JobDriver:DriverTick_Patch1(Object)
Verse.AI.Pawn_JobTracker:JobTrackerTick()
Verse.Pawn:Tick_Patch2(Object)
AIRobot.X2_AIRobot:Tick()
Verse.TickList:Tick()
Verse.TickManager:DoSingleTick()
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update_Patch1(Object)