I likely have compatibility issues (modlist below), but this broke my smokers/driers/pressers etc.
Getting food processor-specific error messages like the below, and my pawns aren't loading anything into them:

Exception drawing DankPyon_Smoker142180: System.ArgumentNullException: Value cannot be null.
Parameter name: source
at System.Linq.Enumerable.Sum[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] selector) [0x0000d] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at ProcessorFramework.CompProcessor.get_TotalIngredientCount () [0x00000] in <366ca5cdfb664a718a82c784a21df701>:0
at ProcessorFramework.CompProcessor.get_Empty () [0x00000] in <366ca5cdfb664a718a82c784a21df701>:0
at ProcessorFramework.CompProcessor.PostDraw () [0x00008] in <366ca5cdfb664a718a82c784a21df701>:0
at Verse.ThingWithComps.Comps_PostDraw () [0x00024] in <badc476ef0d446b498e5b20480e435f8>:0
at Verse.ThingWithComps.Draw () [0x00014] in <badc476ef0d446b498e5b20480e435f8>:0
at ItemProcessor.Building_ItemProcessor.Draw () [0x00001] in <c512655671804027b8acaa448dc39382>:0
at Verse.DynamicDrawManager.DrawDynamicThings () [0x000d8] in <badc476ef0d446b498e5b20480e435f8>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.DynamicDrawManager:DrawDynamicThings ()
(wrapper dynamic-method) Verse.Map:Verse.Map.MapUpdate_Patch3 (Verse.Map)
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch1 (Verse.Game)
(wrapper dynamic-method) Verse.Root_Play:Verse.Root_Play.Update_Patch1 (Verse.Root_Play)


~~~~~~~~~~~~~~~~~~~~~~~~
Modlist:
<version>1.4.3704 rev896</version>
<activeMods>
<li>brrainz.harmony</li>
<li>ludeon.rimworld</li>
<li>ludeon.rimworld.royalty</li>
<li>ludeon.rimworld.ideology</li>
<li>ludeon.rimworld.biotech</li>
<li>rupal.rimpymodmanagerdatabase</li>
<li>unlimitedhugs.hugslib</li>
<li>imranfish.xmlextensions</li>
<li>oskarpotocki.vanillafactionsexpanded.core</li>
<li>syrchalis.processor.framework</li>
<li>rimfridge.kv.rw</li>
<li>lwm.deepstorage</li>
<li>oskarpotocki.vanillafactionsexpanded.medievalmodule</li>
<li>dankpyon.medieval.overhaul</li>
<li>neronix17.toolbox</li>
<li>neronix17.outland.core</li>
<li>neronix17.outland.furnitureanddecor</li>
<li>jet.vanillaterrain</li>
<li>vanillaexpanded.vtexe</li>
<li>ih.clean.textures</li>
<li>limetreesnake.systems</li>
<li>fluffy.worktab</li>
<li>victor.wallsaresolid</li>
<li>fluffy.colonymanager</li>
<li>vanillaexpanded.vcookesushi</li>
<li>vanillaexpanded.vcooke</li>
<li>vanillaexpanded.basegeneration</li>
<li>vanillaexpanded.vcef</li>
<li>vanillaexpanded.vfepropsanddecor</li>
<li>vanillaexpanded.vbookse</li>
<li>vanillaexpanded.vee</li>
<li>vanillaexpanded.vmemese</li>
<li>vanillaexpanded.skills</li>
<li>vanillaexpanded.vanillasocialinteractionsexpanded</li>
<li>accurex.medievalempireoverhaul</li>
<li>sierra.rf.medievaloverhaul</li>
<li>sierra.rt.medievaltalents</li>
<li>vanillaexpanded.vgeneticse</li>
<li>frozensnowfox.filthvanisheswithrainandtime</li>
<li>dubwise.dubsbadhygiene</li>
<li>eldersign.dbhformedieval</li>
<li>dubwise.dubscentralheating</li>
<li>vanillaexpanded.vfecore</li>
<li>vanillaexpanded.vtexvariations</li>
<li>farxmai2.vanillafurnitureexpandedpack</li>
<li>vanillaexpanded.vfesecurity</li>
<li>vanillaexpanded.vfefarming</li>
<li>vanillaexpanded.vfearchitect</li>
<li>longman.smallerradiusforanimatreesandshrines</li>
<li>grizzlemethis.tradingspot.rw</li>
<li>dubwise.dubsmintmenus</li>
<li>dubwise.rimatomics</li>
<li>com.github.alandariva.moreplanning</li>
<li>dubwise.dubsskylights</li>
<li>limetreesnake.furnishing</li>
<li>dbl.textureaddons.lts.continued</li>
<li>owlchemist.windows</li>
<li>zh.owlchemist.windows</li>
<li>musicexpanded.framework</li>
<li>musicexpanded.core</li>
<li>shinzy.bridgello</li>
<li>monkey5206.carrycapacityfixed</li>
<li>ogliss.thewhitecrayon.quarry</li>
<li>jgh.quarry</li>
<li>twowolfstyle.huntingsquad</li>
<li>mlie.justputitoverthere</li>
<li>cyanobot.flushbiotuning</li>
<li>vanillaexpanded.vhe</li>
<li>inglix.fasterbiosculptingpod</li>
<li>waether.biosculptingplus</li>
<li>syrus.bpansresize</li>
<li>avilmask.commonsense</li>
<li>dubwise.dubsbreakmod</li>
<li>nephlite.orbitaltradecolumn</li>
<li>skye.lowerinsultedstackmultiplier</li>
<li>murmur.walllight</li>
<li>marvinkosh.ughyougotme</li>
<li>uuugggg.replacestuff</li>
<li>orion.hospitality</li>
<li>makaru.fertileplanet</li>
<li>dubwise.dubsmintminimap</li>
<li>erdelf.prisonerransom</li>
<li>jaxe.bubbles</li>
<li>notfood.mendandrecycle</li>
<li>haplo.miscellaneous.training</li>
<li>vesper.notmyfault</li>
<li>spoonshortage.adogsaidanimalprosthetics</li>
<li>mehni.numbers</li>
<li>uuugggg.sharetheload</li>
<li>petetimessix.simplesidearms</li>
<li>dhultgren.smarterconstruction</li>
<li>lucifer.realisticrooms</li>
<li>mlie.reclaimreuserecycle</li>
<li>avius.locks</li>
<li>m00nl1ght.mappreview</li>
<li>weilbyte.snapout</li>
<li>mlie.badcanbegood</li>
<li>dimonsever000.socialinterface.specific</li>
<li>tammybee.whereismyweapon</li>
<li>dani.bluntsocialfighting</li>
<li>vanillaexpanded.vanillatraitsexpanded</li>
<li>mlie.vanillabooksexpandedexpanded</li>
<li>caretcake.resources.morecomponentsandsteelmorevanilla</li>
<li>vr.mopatches</li>
<li>sumika.overflowingflowers</li>
<li>bishop.mendingmedieval</li>
<li>elif.flooringanddecorativeoptions</li>
<li>krkr.rocketman</li>
</activeMods>
<knownExpansions>
<li>ludeon.rimworld</li>
<li>ludeon.rimworld.royalty</li>
<li>ludeon.rimworld.ideology</li>
<li>ludeon.rimworld.biotech</li>
</knownExpansions>