Comment 2 for bug 1789424

The Seamly2D project started getting this exact error message on 09-27-2019. We haven't been able to build our package since that date.
https://code.launchpad.net/~susan-spencer/seamly2d/+git/seamly2d
https://github.com/FashionFreedom/Seamly2D/issues/219

Last import error message shown on Seamly2D's Launchpad project page at https://code.launchpad.net/~susan-spencer/seamly2d/+git/seamly2 was:
"Import started on 2019-09-27 on alnitak and finished on 2019-09-27 taking 50 seconds — see the log"

From http://launchpadlibrarian.net/444478095/susan-spencer-seamly2d-+git-seamly2d.log:
2019-09-27 19:16:42 INFO Starting job.
2019-09-27 19:16:42 INFO Getting existing repository from hosting service.
2019-09-27 19:17:18 INFO Cloning into bare repository 'repository'...
2019-09-27 19:17:18 INFO Fetching remote repository.
2019-09-27 19:17:19 INFO From https://github.com/FashionFreedom/Seamly2D
2019-09-27 19:17:19 INFO x [deleted] (none) -> refs/pull/196/merge
2019-09-27 19:17:19 INFO * [new branch] azure-pipelines-testbranch_1 -> source/azure-pipelines-testbranch_1
2019-09-27 19:17:19 INFO * [new branch] builds -> source/builds
2019-09-27 19:17:19 INFO * [new branch] develop -> source/develop
2019-09-27 19:17:19 INFO * [new branch] feature-173 -> source/feature-173
2019-09-27 19:17:19 INFO * [new branch] feature-183 -> source/feature-183
2019-09-27 19:17:19 INFO * [new branch] l10n_develop -> source/l10n_develop
2019-09-27 19:17:19 INFO * [new branch] l10n_develop2 -> source/l10n_develop2
2019-09-27 19:17:19 INFO * [new branch] l10n_master -> source/l10n_master
2019-09-27 19:17:19 INFO * [new branch] l10n_master2 -> source/l10n_master2
2019-09-27 19:17:19 INFO * [new branch] l10n_release -> source/l10n_release
2019-09-27 19:17:19 INFO * [new branch] master -> source/master
2019-09-27 19:17:19 INFO * [new branch] master_hotfix_qt59 -> source/master_hotfix_qt59
2019-09-27 19:17:19 INFO * [new branch] release -> source/release
2019-09-27 19:17:19 INFO * [new branch] trusty -> source/trusty
2019-09-27 19:17:19 INFO source/HEAD set to develop
2019-09-27 19:17:19 INFO Pushing repository to hosting service.
2019-09-27 19:17:20 INFO remote: Backend connection failed
2019-09-27 19:17:20 INFO fatal: unable to access 'https://<redacted>@git.launchpad.net/~susan-spencer/seamly2d/+git/seamly2d/': The requested URL returned error: 500
2019-09-27 19:17:20 INFO Unable to push to hosting service: git push exited 128
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.