Fatal error

Hi,

I have this problem and see this email-message:

WordPress-Version 6.2.2
Theme: Bateaux
Child-Theme: Bateaux Child02 (Version 1.0.0)
Plugin: Nested Pages (Version 3.2.4)
PHP-Version 8.0.28

Fehler-Details
==============
Ein Fehler vom Typ E_ERROR wurde in der Zeile 40 der Datei /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/ListingRepository.php verursacht. Fehlermeldung: Uncaught TypeError: Cannot access offset of type string on string in /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/ListingRepository.php:40
Stack trace:
#0 /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/Listing.php(317): NestedPages\Entities\Listing\ListingRepository->visiblePages('page')
#1 /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/Listing.php(392): NestedPages\Entities\Listing\Listing->listOpening(Array, 0)
#2 /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/Listing.php(369): NestedPages\Entities\Listing\Listing->listPostLevel()
#3 /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Views/listing.php(98): NestedPages\Entities\Listing\Listing->getPosts()
#4 /www/htdocs/xxx/wp-content/plugins/wp-nested-pages/app/Entities/Listing/Listing.php(280): include('/www/htdocs/w01...')
#5 /www/htdocs/xxx/wp-includes/class-wp-hook.php(308): NestedPages\Entities\Listing\Listing->listPosts('')
#6 /www/htdocs/xxx/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#7 /www/htdocs/xxx/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#8 /www/htdocs/xxx/wp-admin/admin.php(259): do_action('toplevel_page_n...')
#9 {main}
    thrown

Please help me and fix it.

Thx