Index: iknow-api/Models/RefreshToken.cs
===================================================================
--- iknow-api/Models/RefreshToken.cs	(revision c1553646f0c960dc4837b0901751e525a51f5613)
+++ iknow-api/Models/RefreshToken.cs	(revision 4b35197f33eaeb2b932700e150e05058b7d4f366)
@@ -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; }