Hi Daniel. > Unfortunately this commit moving Kombu to 4.6.4 a day ago has broken the devstack setup scripts. > https://opendev.org/openstack/requirements/commit/b236f0af43259959cb2a0f82880cebbdd0da7f27 <snip> > TypeError: open: path should be string, bytes or os.PathLike, not _NormalAccessor After I saw this go by, nova (at least) started failing all openstack-tox-py37 runs with the same error. I was able to recreate the problem locally. I was also able to resolve it by moving kombu back to 4.6.3. Clearly we need to blacklist kombu 4.6.4 for the moment. I've proposed that patch here [1]. Thank you very much for identifying the root of the problem. efried [1] https://review.opendev.org/#/c/677070/