Fatal error with one child site

I installed MainWP on 90 child websites and I have some problems with one of them.
There is a fatal error (see message below) - the website is ok on the front end and in the back end, except that I can’t see any information in Settings > Main WP Child > Server Information / Connection details.
On the parent website, everything is fine.
I would be glad if someone could help me. Thanks a lot!

Error message

WordPress-Version 6.4.3
Aktives Theme: Avada Child (Version 1.0.0)
Aktuelles Plugin: MainWP Child (Version 5.0)
PHP-Version 8.1.27



Ein Fehler vom Typ E_ERROR wurde in der Zeile 562 der Datei xxx/wordpress/wp-content/plugins/mainwp-child/class/class-mainwp-helper.php verursacht. Fehlermeldung: Uncaught TypeError: Unsupported operand types: string / float in

Stack trace:

#0 xxx/wordpress/wp-content/plugins/mainwp-child/class/class-mainwp-clone-page.php(261): MainWP\Child\MainWP_Helper::human_filesize()

#1 xxx/wordpress/wp-content/plugins/mainwp-child/class/class-mainwp-pages.php(327): MainWP\Child\MainWP_Clone_Page::render_normal_restore()

#2 xxx/wordpress/wp-includes/class-wp-hook.php(324): MainWP\Child\MainWP_Pages->render_pages()

#3 xxx/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()

#4 xxx/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action()

#5 xxx/wordpress/wp-admin/admin.php(259): do_action()

#6 xxx/wordpress/wp-admin/options-general.php(10): require_once(‘…’)

#7 {main}


Hey @Nathalie

Welcome to the MainWP community!

Are you running the latest version of MainWP Child plugin v5.0.1?

Can you please send me the child site’s system report via a private message?

System report is available on https://child-site/wp-admin/options-general.php?page=mainwp_child_tab

To send a private message, click on my name and then Message.

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