Traceback (most recent call last):
  File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/web/browse/views/utils/snapshot_context.py", line 239, in browse_snapshot_directory
    browse_context='directory') # noqa
  File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/web/browse/views/utils/snapshot_context.py", line 135, in _process_snapshot_request
    origin_url, timestamp, visit_id)
  File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/web/browse/utils.py", line 921, in get_snapshot_context
    origin_info = get_origin_info(origin_url, origin_type)
  File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/web/browse/utils.py", line 869, in get_origin_info
    raise NotFoundExc('Origin with url %s not found!' % escape(origin_url))
swh.web.common.exc.NotFoundExc: Origin with url https://ftp.gnu.org/gnu/8sync/ not found!