error in contitional fields

Please could you help me to solve the following error. Conditional fields seems not to work correctly.

Fehler-Details

==============

Ein Fehler vom Typ E_ERROR wurde in der Zeile 59 der Datei /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-content/plugins/cf7-conditional-fields/tg_pane_group.php verursacht. Fehlermeldung: Uncaught Error: Class "WPCF7_TagGeneratorGenerator" not found in /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-content/plugins/cf7-conditional-fields/tg_pane_group.php:59

Stack trace:

#0 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-content/plugins/contact-form-7/admin/includes/tag-generator.php(73): wpcf7_tag_generator_group()

#1 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-content/plugins/contact-form-7/admin/edit-contact-form.php(299): WPCF7_TagGenerator->print_panels()

#2 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-content/plugins/contact-form-7/admin/admin.php(391): require_once('...')

#3 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-includes/class-wp-hook.php(310): wpcf7_admin_management_page()

#4 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters()

#5 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-includes/plugin.php(517): WP_Hook->do_action()

#6 /mnt/web612/a2/89/59922289/htdocs/WordPress_08/wp-admin/admin.php(259): do_action()

#7 {main}

  thrown

WordPress-Version 6.3.5

Aktives Theme: Content (Version 2.0)

Aktuelles Plugin: Conditional Fields for Contact Form 7 (Version 2.6)

PHP-Version 8.3.22

The page I need help with: [log in to see the link]