PHP 8.0.16

Hi,
I have an error with below deatils. I can run Rank Math but when I want to save a modification on a page itt bring me an error.

Deatils:

WordPress 5.9.1 version
Theme: Uncode Child (1.0.0 verzió)
Plugin: Rank Math SEO (1.0.84 verzió)
PHP version: 8.0.16

Error details
===============
A(z) /var/www/html/wp-content/plugins/seo-by-rank-math/includes/modules/instant-indexing/class-instant-indexing.php file 360 line causes an E_ERROR. Errormessage: Uncaught TypeError: array_reverse(): Argument #1 ($array) must be of type array, bool given in /var/www/html/wp-content/plugins/seo-by-rank-math/includes/modules/instant-indexing/class-instant-indexing.php:360
Stack trace:
#0 /var/www/html/wp-content/plugins/seo-by-rank-math/includes/modules/instant-indexing/class-instant-indexing.php(360): array_reverse()
#1 /var/www/html/wp-content/plugins/seo-by-rank-math/includes/modules/instant-indexing/class-instant-indexing.php(275): RankMath\Instant_Indexing\Instant_Indexing->api_submit()
#2 /var/www/html/wp-includes/class-wp-hook.php(307): RankMath\Instant_Indexing\Instant_Indexing->save_post()
#3 /var/www/html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters()
#4 /var/www/html/wp-includes/plugin.php(474): WP_Hook->do_action()
#5 /var/www/html/wp-includes/post.php(4676): do_action()
#6 /var/www/html/wp-includes/post.php(4789): wp_insert_post()
#7 /var/www/html/wp-admin/includes/post.php(426): wp_update_post()
#8 /var/www/html/wp-admin/post.php(227): edit_post()
#9 {main}
thrown