PHP Warning Undefined array key 0

Hello
Query Monitor reports
page: https://mydomain.com/wp-admin/plugins.php?plugin_status=all&paged=1&s
Warning Undefined array key 0
Location:
wp-content/plugins/wp-fail2ban/admin/admin.php:300
org\l\c\w\w\admin_menu_fix()
wp-includes/class-wp-hook.php:308
do_action(‘admin_menu’)
wp-admin/includes/menu.php:155
Warning Trying to access array offset on value of type null
Location:
wp-content/plugins/wp-fail2ban/admin/admin.php:300
org\l\c\w\w\admin_menu_fix()
wp-includes/class-wp-hook.php:308
do_action(‘admin_menu’)
wp-admin/includes/menu.php:155

PHP 8.0

Latest WP install

Thanks for the info.

It’ll be fixed in v5.1.