E_DEPRECATED: Return type of Themeco\Cornerstone\Parsy\Token::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/vhosts/h266634.web69.alfahosting-server.de/html/wp-content/plugins/cornerstone/includes/classes/Parsy/Token.php on line 33.