Fatal error: Uncaught WpOrg\Requests\Exception\InvalidArgument: WpOrg\Requests\IdnaEncoder::encode(): Argument #1 ($hostname) must be of type string|Stringable, NULL given in /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/Requests/src/Exception/InvalidArgument.php:29 Stack trace: #0 /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/Requests/src/IdnaEncoder.php(63): WpOrg\Requests\Exception\InvalidArgument::create(1, '$hostname', 'string|Stringab...', 'NULL') #1 /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/Requests/src/Requests.php(693): WpOrg\Requests\IdnaEncoder::encode(NULL) #2 /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/Requests/src/Requests.php(453): WpOrg\Requests\Requests::set_defaults('http://[\xE3\x82\xB5\xE3\x83\xBC\xE3...', Array, NULL, 'GET', Array) #3 /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/class-wp-http.php(410): WpOrg\Requests\Requests::request('http://[\xE3\x82\xB5\xE3\x83\xBC\xE3...', Array, NULL, 'GET', Array) #4 /home/saycon/saycon in /home/saycon/saycon.co.jp/public_html/wordpress/wp-includes/Requests/src/Exception/InvalidArgument.php on line 29