.tox/py3/lib/python3.7/site-packages/swh/web/tests/api/views/test_revision.py:15: in <module> @given(revision()) .tox/py3/lib/python3.7/site-packages/swh/web/tests/strategies.py:356: in revision return _known_swh_object("revisions") .tox/py3/lib/python3.7/site-packages/swh/web/tests/strategies.py:59: in _known_swh_object return sampled_from(get_tests_data()[object_type]) .tox/py3/lib/python3.7/site-packages/swh/web/tests/data.py:334: in get_tests_data _tests_data = _init_tests_data() .tox/py3/lib/python3.7/site-packages/swh/web/tests/data.py:222: in _init_tests_data snapshots.add(hash_to_hex(snp.id)) E AttributeError: 'NoneType' object has no attribute 'id'