crash prevention when failing to GetContents in CardRenderer

ChestPreview/ChestPreview/Rendering/CardRenderer.cs

@@ -117,8 +117,20 @@ internal class CardRenderer(ICoreClientAPI api, Config config) : IDisposable
             if (heldBag == null)
                 continue;
 
+            ItemStack[]? bagContents;
+            try
+            {
+                bagContents = heldBag.GetContents(bagStack, api.World);
+            }
+            catch
+            {
+                continue;
+            }
+
+            if (bagContents == null)
+                continue;
+
             contents = [];
-            ItemStack[] bagContents = heldBag.GetContents(bagStack, api.World);
             foreach (ItemStack contentStack in bagContents)
             {
                 if (contentStack == null || contentStack.StackSize <= 0)