My Tenants Resource doesn't show in Menu

<?php

namespace App\Filament\Resources;

use App\Filament\Resources\TenantResource\Pages;

use App\Models\Tenant;
use App\Models\User;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;


class TenantResource extends Resource
{
    protected static ?string $model = Tenant::class;

    protected static ?string $navigationIcon = 'heroicon-o-rectangle-stack';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\TextInput::make('name')
                    ->required(),
                Forms\Components\TextInput::make('password')
                    ->password()
                    ->required(),
                Forms\Components\TextInput::make('email')
                    ->email()
                    ->required(),
                Forms\Components\TextInput::make('domain'),
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('id')
                    ->label('ID')
                    ->searchable(),
                Tables\Columns\TextColumn::make('name')
                    ->searchable(),
                Tables\Columns\TextColumn::make('email')
                    ->searchable(),
                Tables\Columns\TextColumn::make('created_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\TextColumn::make('updated_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([
                //
            ])
            ->actions([
                Tables\Actions\EditAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make(),
                ]),
            ]);
    }

    public static function getRelations(): array
    {
        return [
            //
        ];
    }

    public static function getPages(): array
    {
        // dd(Tenant::first()); //this line is working.
        return [
            'index' => Pages\ListTenants::route('/'),
            'create' => Pages\CreateTenant::route('/create'),
            'edit' => Pages\EditTenant::route('/{record}/edit'),
        ];
    }
}

<?php

namespace App\Models;

use Illuminate\Support\Facades\Hash;
use Stancl\Tenancy\Contracts\TenantWithDatabase;
use Stancl\Tenancy\Database\Concerns\HasDomains;
use Stancl\Tenancy\Database\Concerns\HasDatabase;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Stancl\Tenancy\Database\Models\Tenant as BaseTenant;

class Tenant extends BaseTenant implements TenantWithDatabase
{
    use HasDatabase, HasDomains;
    public function domains(): HasMany
    {
        return $this->hasMany(Domain::class);
    }

    public static function getCustomColumns(): array
    {
        return [
            'id',
            'name',
            'email',
            'password',
        ];
    }
    protected $hidden = [
        'password',
        'remember_token',
    ];

    public function setPasswordAttribute($value)
    {
        $this->attributes['password'] = Hash::make($value);
    }
}