Problems while searching for a new upstream version

package:
gtk2-engines-oxygen
severity:
high
created:
2017-11-21
last updated:
2019-08-25

uscan had problems while searching for a new upstream version:
In watch file debian/watch, reading webpage
  ftp://ftp.kde.org/pub/kde/stable/oxygen-gtk2/ failed: 500 Name or service not known