XML error: Duplicate XML node name costList in this XML block: <ThingDef ParentName="BuildingBase"><designationCategory>AF_BARs</designationCategory><tradeability>None</tradeability><costList><Steel>40</Steel><ComponentIndustrial>2</ComponentIndustrial></costList><defName>AncientGenerator</defName><label>ancient generator</label><description>An ancient electrical generator. Its usable parts were smashed or looted long ago, and the rest has rusted into uselessness.</description><rotatable>false</rotatable><graphicData><texPath>Things/Building/Ruins/AncientGenerator</texPath><graphicClass>Graphic_Random</graphicClass><drawSize>(2,2)</drawSize><shadowData><volume>(1.9, 0.85, 1.75)</volume></shadowData></graphicData><size>(2,2)</size><fillPercent>0.5</fillPercent><altitudeLayer>Building</altitudeLayer><statBases><MaxHitPoints>250</MaxHitPoints><WorkToBuild>200</WorkToBuild><Flammability>0.5</Flammability></statBases><passability>PassThroughOnly</passability><pathCost>50</pathCost><comps><li Class="VanillaMemesExpanded.CompProperties_DeconstructJunk"><defToPopUpMinified>VME_AncientGenerator</defToPopUpMinified></li></comps><ignoreIllegalLabelCharacterConfigError>true</ignoreIllegalLabelCharacterConfigError><costList><Steel>35</Steel><Chemfuel>5</Chemfuel><ComponentIndustrial>1</ComponentIndustrial></costList></ThingDef>


getting several of these

https://imgur.com/aAbqPvj