Cluster sub-navigation not showing

<?php

namespace App\Filament\Clusters;

use Filament\Clusters\Cluster;

class MiniTournaments extends Cluster
{
    protected static ?string $navigationIcon = 'heroicon-o-squares-2x2';
    protected static ?string $clusterBreadcrumb = 'Mini Torneos';
    protected static ?string $navigationLabel = 'Mini Torneos';

    protected static ?int $navigationSort = 0;

    protected static ?string $slug = 'mini-tournaments';
}

namespace App\Filament\Clusters\MiniTournaments\Resources;

use App\Filament\Clusters\MiniTournaments;
use App\Filament\Clusters\MiniTournaments\Resources\MiniTournamentPlayersResource\Pages;
use App\Models\MiniTournamentPlayer;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;

class MiniTournamentPlayersResource extends Resource
{
    protected static ?string $model = MiniTournamentPlayer::class;

    protected static ?string $navigationIcon = 'heroicon-o-user-group';

    protected static ?string $cluster = MiniTournaments::class;

    protected static ?string $navigationLabel = 'Jugadores';

    protected static ?int $navigationSort = 2;

    ...