Index: iknow-api/Models/RefreshToken.cs
===================================================================
--- iknow-api/Models/RefreshToken.cs	(revision 1e58098a182dd9c4d1bf1b235b61ce1760f23f7c)
+++ iknow-api/Models/RefreshToken.cs	(revision 9f7a52e9e0f0ba39657d48799a303794b37efa11)
@@ -7,5 +7,5 @@
         public int Id { get; set; }
         public int UserId { get; set; }
-        public User User { get; set; } 
+        public User? User { get; set; } 
         public string? Token { get; set; }
         public DateTime ExpiresAt { get; set; }