CD image xubuntu/groovy/daily-live failed to build on 20200705

[CD Image]

===== Building live filesystems =====
Sun Jul  5 01:40:02 UTC 2020
xubuntu-amd64 on Launchpad starting at 2020-07-05 01:40:02
xubuntu-amd64: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/groovy/xubuntu/+build/226040
xubuntu-amd64 on Launchpad finished at 2020-07-05 02:04:42 (Successfully built)
Traceback (most recent call last):
  File "/srv/cdimage.ubuntu.com/bin/../lib/cdimage/build.py", line 672, in build_image_set_locked
    live_successful = run_live_builds(config)
  File "/srv/cdimage.ubuntu.com/bin/../lib/cdimage/livefs.py", line 419, in run_live_builds
    lp_build=lp_build)
  File "/srv/cdimage.ubuntu.com/bin/../lib/cdimage/livefs.py", line 390, in live_build_finished
    tracker_set_rebuild_status(config, [0, 1, 2], 3, arch)
  File "/srv/cdimage.ubuntu.com/bin/../lib/cdimage/tracker.py", line 71, in tracker_set_rebuild_status
    for rebuild in tracker.qatracker.get_rebuilds(current_state):
  File "/srv/cdimage.ubuntu.com/ubuntu-archive-tools/qatracker.py", line 521, in get_rebuilds
    for entry in self.tracker.rebuilds.get_list(list(record_filter)):
  File "/usr/lib/python3.5/xmlrpc/client.py", line 1092, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python3.5/xmlrpc/client.py", line 1432, in __request
    verbose=self.__verbose
  File "/usr/lib/python3.5/xmlrpc/client.py", line 1134, in request
    return self.single_request(host, handler, request_body, verbose)
  File "/usr/lib/python3.5/xmlrpc/client.py", line 1167, in single_request
    dict(resp.getheaders())
xmlrpc.client.ProtocolError: <ProtocolError for iso.qa.ubuntu.com/xmlrpc.php: 500 Internal Server Error>