diff --git a/labs/Teacher/TeacherExt/Controllers/HomeController.cs b/labs/Teacher/TeacherExt/Controllers/HomeController.cs
index a09bbece..6f2666e6 100644
--- a/labs/Teacher/TeacherExt/Controllers/HomeController.cs
+++ b/labs/Teacher/TeacherExt/Controllers/HomeController.cs
@@ -221,15 +221,23 @@ namespace TeacherExt.Controllers
                 if (!string.IsNullOrEmpty(entity.IdNumber))
                 {
                     model.IdNumber = _helper.Decrypt(entity.IdNumber);
-                    if (!string.IsNullOrWhiteSpace(model.IdNumber))
+                    try
                     {
-                        if (model.IdNumber.Length == 15 || model.IdNumber.Length == 18)
+                        if (!string.IsNullOrWhiteSpace(model.IdNumber))
                         {
-                            var value = model.IdNumber.Length == 15 ? $"19{model.IdNumber.Substring(6, 6)}" : model.IdNumber.Substring(6, 8);
-                            var birthday = DateTime.ParseExact(value, "yyyyMMdd", CultureInfo.InvariantCulture);
-                            model.Age = DateTime.Now.Year - birthday.Year;
+                            if (model.IdNumber.Length == 15 || model.IdNumber.Length == 18)
+                            {
+                                var value = model.IdNumber.Length == 15 ? $"19{model.IdNumber.Substring(6, 6)}" : model.IdNumber.Substring(6, 8);
+                                var birthday = DateTime.ParseExact(value, "yyyyMMdd", CultureInfo.InvariantCulture);
+                                model.Age = DateTime.Now.Year - birthday.Year;
+                            }
                         }
                     }
+                    catch (Exception ex)
+                    {
+                        ex.PrintStack();
+                    }
+
                 }
                 if (entity.WorkingTime.HasValue)
                 {
diff --git a/labs/Teacher/TeacherExt/appsettings.json b/labs/Teacher/TeacherExt/appsettings.json
index 7afdf17d..6ce14b63 100644
--- a/labs/Teacher/TeacherExt/appsettings.json
+++ b/labs/Teacher/TeacherExt/appsettings.json
@@ -17,6 +17,6 @@
   "ConnectionStrings": {
     "sqlite": "Data Source=data.db",
     "mysql": "Server=localhost;Port=3306;Database=teacher;Uid=root;Pwd=aA123456!;",
-    "mariyadb": "Server=10.10.15.13;Port=22066;Database=dsideal_db;Uid=root;Pwd=DsideaL147258369;CharSet=utf8mb4;"
+    "mariyadb": "Server=10.10.15.13;Port=22066;Database=dsideal_db;Uid=root;Pwd=DsideaL147258369;CharSet=utf8mb4;ConvertZeroDateTime=True;"
   }
 }