PHP Deprecated Error

Hello there,

The plugin reports an error when running in the PHP 8.1 environment. The error message is as follows:

PHP Deprecated: Constant FILTER_SANITIZE_STRING is deprecated in mywebsite.com\wp-content\plugins\scriptless-social-sharing\includes\postmeta\class-scriptlesssocialsharing-postmeta.php on line 183

It runs normally without error in PHP 8.0 environment. Please look into it, thanks.