Thank you Mark.
I look forward to the updates.
No further information is displayed.
It is displayed everywhere on the management screen and display side.
It was not displayed in PHP 8.0, and it came to be displayed as soon as it was upgraded to 8.1.
I’m not the person who posted this, but I have the same problem.
str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated
wp-content/plugins/wp-super-cache/wp-cache-phase2.php:32
str_replace()
wp-content/plugins/wp-super-cache/wp-cache-phase2.php:32
get_wp_cache_key()
wp-content/plugins/wp-super-cache/wp-cache-phase2.php:85
wp_super_cache_init()
wp-content/plugins/wp-super-cache/wp-cache-phase2.php:350
wp_cache_postload()
wp-settings.php:470
