Attention,: require_once(ABSPATHWPINC/IXR/class-IXR-server.php): failed to open stream: No such file or directory in /home/sentinel/public_html/wp-includes/class-IXR.php en ligne 42

erreur fatale: require_once (): Echec de l'ouverture requise 'ABSPATHWPINC / IXR / classe-IXR-server.php' (chemin_include = '.: / usr / lib / php: / usr / local / lib / php') /home/sentinel/public_html/wp-includes/class-IXR.php en ligne 42