# Pastebin ZMNZgAfG
Traceback (most recent call last):
  File "/var/lib/kolla/venv/bin/neutron-db-manage", line 10, in <module>
    sys.exit(main())
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 686, in main
    return_val |= bool(CONF.command.func(config, CONF.command.name))
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 205, in do_upgrade
    run_sanity_checks(config, revision)
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/neutron/db/migration/cli.py", line 670, in run_sanity_checks
    script_dir.run_env()
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/alembic/script/base.py", line 416, in run_env
    util.load_python_file(self.dir, 'env.py')
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/alembic/util/pyfiles.py", line 93, in load_python_file
    module = load_module_py(module_id, path)
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/alembic/util/compat.py", line 79, in load_module_py
    mod = imp.load_source(module_id, path, fp)
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/networking_sfc/db/migration/alembic_migrations/env.py", line 25, in <module>
    from networking_sfc.db.migration.models import head  # noqa
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/networking_sfc/db/migration/models/head.py", line 17, in <module>
    from networking_sfc.db import flowclassifier_db  # noqa
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/networking_sfc/db/flowclassifier_db.py", line 33, in <module>
    from networking_sfc.extensions import flowclassifier as fc_ext
  File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/networking_sfc/extensions/flowclassifier.py", line 44, in <module>
    _l7_param_attrs = attr.AttributeInfo(SUPPORTED_L7_PARAMETERS)
AttributeError: 'module' object has no attribute 'AttributeInfo'