ERROR: Method Maatwebsite\Excel\Sheet::setOrientation does not exist

I am using Laravel-5.8 and Maatwebsite-3.1 to export to excel.

While trying to format, I did page setup to orientation

<?php

namespace App\Exports;

use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\FromQuery;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\BeforeExport;
use Maatwebsite\Excel\Events\BeforeWriting;
use Maatwebsite\Excel\Events\BeforeSheet;
use Maatwebsite\Excel\Events\AfterSheet;
use Maatwebsite\Excel\Concerns\FromView;
use PhpOffice\PhpSpreadsheet\Shared\Date;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
use Maatwebsite\Excel\Concerns\WithColumnFormatting;
use Maatwebsite\Excel\Concerns\WithMapping;
use \Maatwebsite\Excel\Sheet;
use Maatwebsite\Excel\Concerns\RegistersEventListeners;
use Illuminate\Support\Facades\DB;

class HrEmployeeGoalExport implements FromCollection, ShouldAutoSize, WithHeadings, WithEvents, WithMapping
{
public function registerEvents(): array
{
    return [
        AfterSheet::class    => function(AfterSheet $event) {

            $cellRange = 'A1:L1'; // All headers
            $event->sheet->getDelegate()->getStyle($cellRange)->getFont()->setName('Calibri')->setSize(14)->setBold($cellRange);
            $event->sheet->getDelegate()->getStyle($cellRange)->getFont()->getColor()
                        ->setARGB(\PhpOffice\PhpSpreadsheet\Style\Color::COLOR_WHITE);
            $event->sheet->getDelegate()->getStyle($cellRange)->getFill()
                        ->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID)
                        ->getStartColor()->setARGB('FF17a2b8');
            $event->sheet->setAutoFilter($cellRange);
            $event->sheet->setOrientation(\PhpOffice\PhpSpreadsheet\Worksheet\PageSetup::ORIENTATION_LANDSCAPE);                      
        },
    ];
 }    
}

When I tried to download, I got this error:

production.ERROR: Method Maatwebsite\Excel\Sheet::setOrientation does not exist. {"userId":469,"exception":"[object] (BadMethodCallException(code: 0): Method Maatwebsite\Excel\Sheet::setOrientation does not exist. at C:\xampp\htdocs\myapp\vendor\laravel\framework\src\Illuminate\Support\Traits\Macroable.php:104) [stacktrace] #0 C:\xampp\htdocs\myapp\vendor\maatwebsite\excel\src\DelegatedMacroable.php(29): Maatwebsite\Excel\Sheet->__call('setOrientation', Array)

And when I used:

$event->sheet->getDelegate()->getPageSetup()->setOrientation(PageSetup::ORIENTATION_LANDSCAPE);

I got this error:

production.ERROR: Class 'App\Exports\PageSetup' not found

How do I get this resolved?

Thanks