I am trying to use this mod, but whenever I start with it enabled, I get a popup.

RimWorld 1.3.3074 rev718
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Message (string)
RimWorld.VersionControl:LogVersionNumber ()
Verse.Root:CheckGlobalInit ()
Verse.Root:Start ()
Verse.Root_Entry:Start ()

[HugsLib] version 9.0.0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Message (string)
HugsLib.Utils.ModLogger:Message (string,object[])
HugsLib.HugsLibController:InitializeController ()
HugsLib.HugsLibController:EarlyInitialize ()
HugsLib.Core.HugsLibMod:.ctor (Verse.ModContentPack)
System.Reflection.MonoCMethod:InternalInvoke (object,object[])
System.Reflection.MonoCMethod:DoInvoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
System.Reflection.MonoCMethod:Invoke (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
System.RuntimeType:CreateInstanceImpl (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo,object[],System.Threading.StackCrawlMark&)
System.Activator:CreateInstance (System.Type,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo,object[])
System.Activator:CreateInstance (System.Type,object[])
Verse.LoadedModManager:CreateModClasses ()
Verse.LoadedModManager:LoadAllActiveMods ()
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__6_1 ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

Exception reading Replace_SimpleResearchBench_Graphic.xml as XML: System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw (System.Exception e) [0x00027] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo (System.String res) [0x00017] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.ParseDocumentContent () [0x0035d] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.Read () [0x0008c] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlLoader.LoadDocSequence (System.Xml.XmlDocument parentDoc) [0x0000d] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlLoader.Load (System.Xml.XmlDocument doc, System.Xml.XmlReader reader, System.Boolean preserveWhitespace) [0x000b4] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlDocument.Load (System.Xml.XmlReader reader) [0x0002e] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at Verse.LoadableXmlAsset..ctor (System.String name, System.String fullFolderPath, System.String contents) [0x00049] in <c9dba226d8de460c86a9518faa82e725>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Verse.LoadableXmlAsset:.ctor (string,string,string)
Verse.DirectXmlLoader/<>c__DisplayClass1_0:<XmlAssetsInModFolder>b__0 (int)
Verse.GenThreading/<>c__DisplayClass8_1:<ParallelFor>b__0 (object)
System.Threading.QueueUserWorkItemCallback:WaitCallback_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.QueueUserWorkItemCallback:System.Threading.IThreadPoolWorkItem.ExecuteWorkItem ()
System.Threading.ThreadPoolWorkQueue:Dispatch ()
System.Threading._ThreadPoolWaitCallback:PerformWaitCallback ()

Exception reading Add_Refuelable.xml as XML: System.Xml.XmlException: Root element is missing.
at System.Xml.XmlTextReaderImpl.Throw (System.Exception e) [0x00027] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo (System.String res) [0x00017] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.ParseDocumentContent () [0x0035d] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlTextReaderImpl.Read () [0x0008c] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlLoader.LoadDocSequence (System.Xml.XmlDocument parentDoc) [0x0000d] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlLoader.Load (System.Xml.XmlDocument doc, System.Xml.XmlReader reader, System.Boolean preserveWhitespace) [0x000b4] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at System.Xml.XmlDocument.Load (System.Xml.XmlReader reader) [0x0002e] in <0f9699188f0c414ea6fb5557f5c16d15>:0
at Verse.LoadableXmlAsset..ctor (System.String name, System.String fullFolderPath, System.String contents) [0x00049] in <c9dba226d8de460c86a9518faa82e725>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Verse.LoadableXmlAsset:.ctor (string,string,string)
Verse.DirectXmlLoader/<>c__DisplayClass1_0:<XmlAssetsInModFolder>b__0 (int)
Verse.GenThreading/<>c__DisplayClass8_1:<ParallelFor>b__0 (object)
System.Threading.QueueUserWorkItemCallback:WaitCallback_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.QueueUserWorkItemCallback:System.Threading.IThreadPoolWorkItem.ExecuteWorkItem ()
System.Threading.ThreadPoolWorkQueue:Dispatch ()
System.Threading._ThreadPoolWaitCallback:PerformWaitCallback ()

Error while instantiating a mod of type VFECore.VFEGlobal: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object
at Verse.ModContentPack.LoadPatches () [0x0003c] in <c9dba226d8de460c86a9518faa82e725>:0
at Verse.ModContentPack.get_Patches () [0x00008] in <c9dba226d8de460c86a9518faa82e725>:0
at VFECore.VFEGlobal+<>c.<.ctor>b__4_0 (Verse.ModContentPack mcp) [0x00000] in <d8851309dbdd44fda19021c129de7e57>:0
at System.Collections.Generic.List`1[T].FindAll (System.Predicate`1[T] match) [0x00013] in <eae584ce26bc40229c1b1aa476bfa589>:0
at VFECore.VFEGlobal..ctor (Verse.ModContentPack content) [0x00068] in <d8851309dbdd44fda19021c129de7e57>:0
at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod,object,object[],System.Exception&)
at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in <eae584ce26bc40229c1b1aa476bfa589>:0
--- End of inner exception stack trace ---
at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00014] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Reflection.MonoCMethod.DoInvoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x0007a] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Reflection.MonoCMethod.Invoke (System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.RuntimeType.CreateInstanceImpl (System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Object[] args, System.Globalization.CultureInfo culture, System.Object[] activationAttributes, System.Threading.StackCrawlMark& stackMark) [0x00213] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Activator.CreateInstance (System.Type type, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Object[] args, System.Globalization.CultureInfo culture, System.Object[] activationAttributes) [0x00095] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Activator.CreateInstance (System.Type type, System.Object[] args) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Verse.LoadedModManager.CreateModClasses () [0x00076] in <c9dba226d8de460c86a9518faa82e725>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.LoadedModManager:CreateModClasses ()
Verse.LoadedModManager:LoadAllActiveMods ()
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__6_1 ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

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UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Verse.LoadedLanguage:InjectIntoData_AfterImpliedDefs ()
Verse.PlayDataLoader/<>c:<DoPlayLoad>b__4_1 ()
Verse.LongEventHandler:ExecuteToExecuteWhenFinished ()
Verse.LongEventHandler:UpdateCurrentAsynchronousEvent ()
Verse.LongEventHandler:LongEventsUpdate (bool&)
(wrapper dynamic-method) Verse.Root:Verse.Root.Update_Patch1 (Verse.Root)
Verse.Root_Entry:Update ()

[HugsLib] initializing LWM_DeepStorage
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Message (string)
HugsLib.Utils.ModLogger:Message (string,object[])
HugsLib.HugsLibController:EnumerateChildMods (bool)
HugsLib.HugsLibController:LoadReloadInitialize ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()