Problems while searching for a new upstream version

package:
obs-build
severity:
high
created:
2017-11-21
last updated:
2019-07-23

uscan had problems while searching for a new upstream version:
In watchfile debian/watch, reading webpage
  http://download.opensuse.org/repositories/OBS:/Server:/Unstable/xUbuntu_12.04/ failed: 404 Not Found