When trying to import a WordPress XML dump from another instance, after submitting the upload it returned a blank screen containing only “Import WordPress”.
A quick check of the php logs showed the entry:
PHP Fatal error: Class ‘DOMDocument’ not found in /home/xxxxxx/wp-content/plugins/wordpress-importer/parsers.php on line 61
You just need to install the php-xml module.
yum install php-xml
service restart httpd
Refresh your browser and try it again. Should be all good.