Comment 1 for bug 1982874

The error makes no sense from the logs we have. It would only raised in this place in the code: https://github.com/openstack/swift/blob/master/swift/common/swob.py#L866-L875

As you can see, this would only be the case if the transfer-encoding header contains a comma-separated list of strings. However, Tempest only sends a single string: https://github.com/openstack/tempest/blob/master/tempest/api/object_storage/test_object_services.py#L189-L195

This is also seen in the logs:
https://logserver.rdoproject.org/63/44163/1/check/periodic-tripleo-ci-centos-9-standalone-full-tempest-api-tempest-master/5a1376b/logs/undercloud/home/zuul/tempest/tempest.log.txt.gz
2022-07-26 12:52:03.255 210485 DEBUG tempest.lib.common.rest_client [tx4cfa0f2d87f24ba4a70fa-0062dfe373 tx4cfa0f2d87f24ba4a70fa-0062dfe373 ] Request - Headers: {'Transfer-Encoding': 'chunked', 'X-Auth-Token': '<omitted>'}

What happened inbetween, not visible in the logs?