Fatal error: Uncaught Error: Class "IXR_Client" not found in /home/klient.dhosting.pl/dlugoszartu/testy.admanagement.pl/public_html/skrypty/php-createwp/wordpress 6.7/wp-includes/IXR/class-IXR-clientmulticall.php:8 Stack trace: #0 {main} thrown in /home/klient.dhosting.pl/dlugoszartu/testy.admanagement.pl/public_html/skrypty/php-createwp/wordpress 6.7/wp-includes/IXR/class-IXR-clientmulticall.php on line 8