not working inventory :c

Models/Inventory.cs

@@ -0,0 +1,26 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Text.Json.Serialization;
+
+namespace PetCompanion.Models
+{
+    public class Inventory
+    {
+        [Key, ForeignKey("Pet")]
+        public string PetId { get; set; }
+        [JsonIgnore]
+        public virtual Pet Pet { get; set; }
+        public virtual ICollection<InventoryItem> Items { get; set; } = new List<InventoryItem>();
+        public int Capacity { get; set; } = 20;
+    }
+
+    public class InventoryItem
+    {
+        [Key]
+        public int Id { get; set; }
+        public string InventoryId { get; set; }
+        public int GameItemId { get; set; }
+        public virtual GameItem GameItem { get; set; }
+        public int Quantity { get; set; }
+    }
+}