Downloadable MusicXML file for Rhapsody in blue returns incorrect/unreadable XML file

See the score:
https://musescore.com/hmscomp/scores/196941
When i download it and want to open it in musescore it gives a warning that this is no correct XML file.
When i still try to import musescore even hangs.
This is what i get when trying to read the xml myself:
System.Xml.XmlException: 'Ein Name darf nicht mit dem Zeichen ' ', hexadezimaler Wert 0x20, beginnen. Zeile 47581, Position 12.'

This is in line 47581:
< default-x="-36.71" default-y="10.51"/>

There seems to be no tag given after the opening "<"