Not found exception trying to create a token

[Igorvf83]

Hello

I'm trying to use the embedded token but without any luck, i already create an app registration, i created a embedded capacity to test, get all API permission and the azure admin granted those permission, but i still have the not found exception when i try to create the token via C#

Microsoft.Rest.HttpOperationException: Operation returned an invalid status code 'NotFound'
at Microsoft.PowerBI.Api.ReportsOperations.<GenerateTokenInGroupWithHttpMessagesAsync>d__32.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.Api.ReportsOperationsExtensions.<GenerateTokenInGroupAsync>d__87.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.Api.ReportsOperationsExtensions.GenerateTokenInGroup(IReportsOperations operations, Guid groupId, Guid reportId, GenerateTokenRequest requestParameters)
at EmbedAPISample.Program.Main(String[] args) in E:\Testes de Codigo\CSharp\PowerBI\Token\Embed-API-Sample\EmbedAPISample\Program.cs:line 53

C# code

using Microsoft.IdentityModel.Clients.ActiveDirectory;
using Microsoft.PowerBI.Api;
using Microsoft.PowerBI.Api.Models;
using Microsoft.Rest;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace EmbedAPISample
{
    class Program
    {
        private static bool useEmbedToken = true;
        private static bool useRLS = false;

        private static string authorityUrl = "https://login.microsoftonline.com/organizations/"; 
        private static string resourceUrl = "https://analysis.windows.net/powerbi/api";
        private static string apiUrl = "https://api.powerbi.com/";

        private static string tenantId = "i put my tenant id here";
        private static Guid groupId = Guid.Parse("i put my group id here");
        
        private static Guid reportId = Guid.Parse("i put my report id here");
        private static Guid datasetId = Guid.Parse("i put my dataset id here"); 

        // **** Update the Client ID and Secret within Secrets.cs ****

        private static ClientCredential credential = null;
        private static AuthenticationResult authenticationResult = null;
        private static TokenCredentials tokenCredentials = null;

        static void Main(string[] args)
        {

            try
            {
                // Create a user password cradentials.
                credential = new ClientCredential(Secrets.ClientID, Secrets.ClientSecret);

                // Authenticate using created credentials
                Authorize().Wait();

                using (var client = new PowerBIClient(new Uri(apiUrl), tokenCredentials))
                {

What i'm doing wrong?

Thanks