diff --git a/MBS-COMMAND.API/appsettings.Development.json b/MBS-COMMAND.API/appsettings.Development.json
index 4f69f9b..4155751 100644
--- a/MBS-COMMAND.API/appsettings.Development.json
+++ b/MBS-COMMAND.API/appsettings.Development.json
@@ -1,6 +1,6 @@
 {
   "ConnectionStrings": {
-    "ConnectionStrings": "Server=103.162.14.116;Database=PRN_SUPER;Uid=sa;Pwd=MyStrongPassword123@;Trust Server Certificate=True;",
+    "ConnectionStrings": "Server=(local);Database=PRN_SUPER;Uid=sa;Pwd=12345;Trust Server Certificate=True;",
     "Redis": "103.162.14.116:6379,password=MyStrongPassword123@,abortConnect=false"
   },
   "JwtOption": {
@@ -10,11 +10,11 @@
     "ExpireMin": 5
   },
   "MasstransitConfiguration": {
-    "Host": "103.162.14.116",
-    "VHost": "myHost",
+    "Host": "local",
+    "VHost": "phucnghi",
     "Port": 5672,
-    "UserName": "sa",
-    "Password": "MyStrongPassword123@"
+    "UserName": "guest",
+    "Password": "guest"
   },
   "MessageBusOptions": {
     "retryLimit": 3,
@@ -69,5 +69,6 @@
       "WithThreadId"
     ]
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "Domain" : "localhost:3000"
 }
diff --git a/MBS_COMMAND.Application/UserCases/Commands/Groups/CreateGroupCommandHandler.cs b/MBS_COMMAND.Application/UserCases/Commands/Groups/CreateGroupCommandHandler.cs
index de1be6b..f793cc7 100644
--- a/MBS_COMMAND.Application/UserCases/Commands/Groups/CreateGroupCommandHandler.cs
+++ b/MBS_COMMAND.Application/UserCases/Commands/Groups/CreateGroupCommandHandler.cs
@@ -6,27 +6,26 @@
 
 namespace MBS_COMMAND.Application.UserCases.Commands.Groups;
 
-public sealed class CreateGroupCommandHandler(IRepositoryBase<Group, Guid> repositoryBase, IRepositoryBase<User, Guid> userRepository, ICurrentUserService currentUserService) : ICommandHandler<Command.CreateGroupCommand>
+public sealed class CreateGroupCommandHandler(
+    IRepositoryBase<Group, Guid> repositoryBase,
+    IRepositoryBase<User, Guid> userRepository,
+    ICurrentUserService currentUserService) : ICommandHandler<Command.CreateGroupCommand>
 {
     public async Task<Result> Handle(Command.CreateGroupCommand request, CancellationToken cancellationToken)
     {
-        var M = await userRepository.FindSingleAsync(x => x.Id == request.MentorId, cancellationToken);
-        if (M == null)
-            return Result.Failure(new Error("404", "Mentor Not Found"));
-       /* var T = Guid.TryParse(currentUserService.UserId, out Guid L);
+        var T = Guid.TryParse(currentUserService.UserId, out var L);
         if (!T)
-            return Result.Failure(new Error("404", "User Not Authorized"));*/
+            return Result.Failure(new Error("404", "User Not Authorized"));
         var G = new Group
         {
             Name = request.Name,
             MentorId = request.MentorId,
             Stack = request.Stacks,
-           // LeaderId = L
-
+            // LeaderId = L
         };
-        G.Members!.Add(new Group_Student_Mapping { StudentId = M.Id, GroupId = G.Id });
+        G.Members!.Add(new Group_Student_Mapping { StudentId = L, GroupId = G.Id });
         repositoryBase.Add(G);
 
         return Result.Success();
     }
-}
+}
\ No newline at end of file