TypeError: initial_value must be unicode or None, not str failing on mol-get_hash-centos-7

Error logs:

2021-10-11 07:44:21.981581 | TASK [tox : Install any sibling python packages]
2021-10-11 07:44:22.886598 | rdo-centos-7 | MODULE FAILURE:
2021-10-11 07:44:22.886982 | rdo-centos-7 | Traceback (most recent call last):
2021-10-11 07:44:22.887066 | rdo-centos-7 | File "<stdin>", line 102, in <module>
2021-10-11 07:44:22.887134 | rdo-centos-7 | File "<stdin>", line 94, in _ansiballz_main
2021-10-11 07:44:22.887198 | rdo-centos-7 | File "<stdin>", line 40, in invoke_module
2021-10-11 07:44:22.887265 | rdo-centos-7 | File "/usr/lib64/python2.7/runpy.py", line 176, in run_module
2021-10-11 07:44:22.887341 | rdo-centos-7 | fname, loader, pkg_name)
2021-10-11 07:44:22.887453 | rdo-centos-7 | File "/usr/lib64/python2.7/runpy.py", line 82, in _run_module_code
2021-10-11 07:44:22.887596 | rdo-centos-7 | mod_name, mod_fname, mod_loader, pkg_name)
2021-10-11 07:44:22.887667 | rdo-centos-7 | File "/usr/lib64/python2.7/runpy.py", line 72, in _run_code
2021-10-11 07:44:22.887730 | rdo-centos-7 | exec code in run_globals
2021-10-11 07:44:22.887793 | rdo-centos-7 | File "/tmp/ansible_tox_install_sibling_packages_payload_Y4x1ed/ansible_tox_install_sibling_packages_payload.zip/ansible/modules/tox_install_sibling_packages.py", line 399, in <module>
2021-10-11 07:44:22.887865 | rdo-centos-7 | File "/tmp/ansible_tox_install_sibling_packages_payload_Y4x1ed/ansible_tox_install_sibling_packages_payload.zip/ansible/modules/tox_install_sibling_packages.py", line 330, in main
2021-10-11 07:44:22.887944 | rdo-centos-7 | File "/usr/lib/python2.7/site-packages/backports/configparser/__init__.py", line 793, in read_string
2021-10-11 07:44:22.888010 | rdo-centos-7 | sfile = io.StringIO(string)
2021-10-11 07:44:22.888072 | rdo-centos-7 | TypeError: initial_value must be unicode or None, not str
2021-10-11 07:44:22.911536 |
2021-10-11 07:44:22.911717 | PLAY RECAP
2021-10-11 07:44:22.911844 | rdo-centos-7 | ok: 4 changed: 3 unreachable: 0 failed: 1 skipped: 3 rescued: 0 ignored: 0

[1]: https://logserver.rdoproject.org/56/36156/2/check/mol-get_hash-centos-7/27e6ccb/job-output.txt
[2]: https://review.rdoproject.org/zuul/builds?job_name=mol-get_hash-centos-7