Export of results to excel does not work

[wobinichnicht]

WordPress-Version 6.0.1
Aktives Theme: Inspiro (Version 1.7.3)
Aktuelles Plugin: Torro Forms (Version 1.0.16)
PHP-Version 8.0.21

Fehler-Details

Ein Fehler vom Typ E_ERROR wurde in der Zeile 47 der Datei /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-content/plugins/torro-forms/src/components/submission-export-csv.php verursacht. Fehlermeldung: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Spreadsheet" not found in /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-content/plugins/torro-forms/src/components/submission-export-csv.php:47
Stack trace:
#0 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-content/plugins/torro-forms/src/components/submission-export.php(132): awsmug\Torro_Forms\Components\Submission_Export_CSV->generate_export_from_data(Array, Array, Object(awsmug\Torro_Forms\DB_Objects\Forms\Form))
#1 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-content/plugins/torro-forms/src/components/submission-export-handler.php(95): awsmug\Torro_Forms\Components\Submission_Export->export_submissions(Object(awsmug\Torro_Forms\DB_Objects\Forms\Form), Array)
#2 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-content/plugins/torro-forms/src/components/submission-export-handler.php(155): awsmug\Torro_Forms\Components\Submission_Export_Handler->export_submissions('csv', Object(awsmug\Torro_Forms\DB_Objects\Forms\Form), Array)
#3 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-includes/class-wp-hook.php(305): awsmug\Torro_Forms\Components\Submission_Export_Handler->handle_export_action()
#4 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters('', Array)
#5 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#6 /homepages/19/d742934189/htdocs/clickandbuilds/Brgerverein/wp-admin/admin.php(419): do_action('admin_action_to...')
#7 {main}
thrown