Class 'PhpOffice\PhpSpreadsheet\IOFactory' not found

Good morning,
why does it appear “Server error 200: OK” when importing using phpmaker 2022.2.2.
thx

After doing network analysis, got an error message:
C:\xampp\htdocs\pengawasan\models\SatuanList.php(1780): Class ‘PhpOffice\PhpSpreadsheet\IOFactory’ not found

  1. Click Tools → Extensions, enable the PhpSpreadsheet extension,
  2. Click Generate tab, enable Composer update, generate and upload all scripts again.