Index: iknow-api/Models/RefreshToken.cs
===================================================================
--- iknow-api/Models/RefreshToken.cs	(revision 3347c1b709ebb3bce2d308c2a77f0e13470fc799)
+++ iknow-api/Models/RefreshToken.cs	(revision 89eb129d211d399e2ddb7da58e90134f29b7333d)
@@ -6,7 +6,7 @@
     {
         public int Id { get; set; }
-         public int UserId { get; set; }
-        public User User { get; set; } = null!;
-        public string Token { get; set; }
+        public int UserId { get; set; }
+        public User User { get; set; } 
+        public string? Token { get; set; }
         public DateTime ExpiresAt { get; set; }
         public bool IsValid { get; set; }