since 1.17 Previously, it was possible to export statistics (visitor and page statistics). From version 1.17 onwards, the export option is optional. To enable exporting (again), the Symfony bundle “phpoffice/phpspreadsheet” must be installed.
Either via Composer or via the Contao Manager.
composer require phpoffice/phpspreadsheet
If this bundle has already been installed as a dependency by other Contao bundles, exporting is of course also possible in the Visitors bundle.