点击购物车标志后没有反应并报错，有没有大佬知道具体是什么原因？在剔除火箭人后并没有发生任何变化，而且相关mod在之前是可以正常使用的

Exception in Verse.Root.OnGUI: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.Planet.Settlement_TraderTracker.get_TraderKind () [0x0000b] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.Planet.Settlement_TraderTracker.get_CanTradeNow () [0x00000] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.Planet.Settlement.get_CanTradeNow () [0x0000a] in <81af9f8a18324e17b286924a43555a7c>:0
at WDYS.MainTabWindow_TradeStock.FindValidSettlements () [0x00065] in <d7ddbad5c526489cace6e1bd1f33b9e9>:0
at WDYS.MainTabWindow_TradeStock.ResetStocks () [0x0011f] in <d7ddbad5c526489cace6e1bd1f33b9e9>:0
at WDYS.MainTabWindow_TradeStock.PreOpen () [0x0004e] in <d7ddbad5c526489cace6e1bd1f33b9e9>:0
at Verse.WindowStack.Add (Verse.Window window) [0x00045] in <81af9f8a18324e17b286924a43555a7c>:0
- prefix rimworld.aRandomKiwi.RimTheme: Boolean aRandomKiwi.RimThemes.WindowsStack_Add_Patch:Prefix(Window window, Int32 ___uniqueWindowID)
at RimWorld.MainTabsRoot.ToggleTab (RimWorld.MainButtonDef newTab, System.Boolean playSound) [0x000a2] in <81af9f8a18324e17b286924a43555a7c>:0
- prefix Dubwise.DubsMintMenus: Void DubsMintMenus.HarmonyPatches+Patch_MainTabsRoot:Prefix(MainButtonDef& newTab)
at RimWorld.MainButtonWorker_ToggleTab.Activate () [0x00005] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.MainButtonWorker.InterfaceTryActivate () [0x0008d] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.MainButtonWorker.DoButton (UnityEngine.Rect rect) [0x000ee] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.MainButtonsRoot.DoButtons () [0x00119] in <81af9f8a18324e17b286924a43555a7c>:0
at RimWorld.MainButtonsRoot.MainButtonsOnGUI () [0x0001a] in <81af9f8a18324e17b286924a43555a7c>:0
- prefix Dubwise.DubsMintMenus: Void DubsMintMenus.HarmonyPatches+Patch_MainButtonsOnGUI:Prefix()
at RimWorld.UIRoot_Play.UIRootOnGUI () [0x0003a] in <81af9f8a18324e17b286924a43555a7c>:0
- postfix Krkr.RocketMan: Void RocketMan.KeyBinder:OnGUI()
at Verse.Root.OnGUI () [0x00046] in <81af9f8a18324e17b286924a43555a7c>:0
- transpiler net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)
- postfix UnlimitedHugs.HugsLib: Void HugsLib.Patches.Root_OnGUI_Patch:OnGUIHookUnfiltered()