Import script fails for my git repository

The launchpad import script fails when trying to import a github repository.
The log shows that something internal is failing and it is not due to github.

Here is my lp branch setup to import: https://code.launchpad.net/~qbittorrent-team/qbittorrent/master

The log shows this:

Traceback (most recent call last):
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/scripts/code-import-worker.py", line 95, in <module>
    sys.exit(script.main())
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/scripts/code-import-worker.py", line 90, in main
    return import_worker.run()
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/lib/lp/codehosting/codeimport/worker.py", line 576, in run
    return self._doImport()
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/lib/lp/codehosting/codeimport/worker.py", line 730, in _doImport
    inter_branch.fetch(limit=revision_limit)
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/bzrplugins/git/branch.py", line 722, in fetch
    self.fetch_objects(stop_revision, fetch_tags=fetch_tags, limit=limit)
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/bzrplugins/git/branch.py", line 745, in fetch_objects
    determine_wants, self.source.mapping, limit=limit)
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/bzrplugins/git/fetch.py", line 718, in fetch_objects
    limit)
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/bzrplugins/git/fetch.py", line 484, in import_git_objects
    mapping.revision_id_foreign_to_bzr)
  File "/srv/importd.launchpad.net/production/launchpad-rev-17413/bzrplugins/git/mapping.py", line 334, in import_commit
    raise UnknownCommitExtra(commit, [item[0] for item in commit.extra])
bzrlib.plugins.git.errors.UnknownCommitExtra: Unknown extra fields in <Commit 1506999968ac94368d7b86b500fabc7cedbcf205>: ['gpgsig'].
Import failed:
Traceback (most recent call last):
Failure: twisted.internet.error.ProcessTerminated: A process has ended with a probable error condition: process ended with exit code 1.