Warning: require_once(XML/Serializer.php): Failed to open stream: No such file or directory in /usr/share/doc/cpanel-php81-xml-serializer-0.21.0/examples/serializeWithIndentedAttributes.php on line 15

Fatal error: Uncaught Error: Failed opening required 'XML/Serializer.php' (include_path='.:/opt/cpanel/ea-php80/root/usr/share/pear') in /usr/share/doc/cpanel-php81-xml-serializer-0.21.0/examples/serializeWithIndentedAttributes.php:15 Stack trace: #0 {main} thrown in /usr/share/doc/cpanel-php81-xml-serializer-0.21.0/examples/serializeWithIndentedAttributes.php on line 15