Fatal error: Uncaught Error: Interface "Sabre\Xml\XmlSerializable" not found in /home/.sites/740/site1364/web/cloud/-/3rdparty/sabre/xml/lib/Element.php:18
Stack trace:
#0 {main}
  thrown in /home/.sites/740/site1364/web/cloud/-/3rdparty/sabre/xml/lib/Element.php on line 18