RHUI4 Log Error: "Relative path cannot begin or end with slashes." for Custom Repositories

Issue

Clients can access Red Hat repositories but are unable to access custom repositories.
Errors were observed in /root/.rhui/rhui.log during custom repository creation via rhui-manager.

# rhui-manager
<snip>

 rhui (repo) => c

 Unique ID for the custom repository (alphanumerics, _, and - only):
 Custom_repo

 Display name for the custom repository [Custom_repo]:
 Custom_repo

 Unique path at which the repository will be served [Custom_repo]:
 custom/repo/

 Should the repository require an entitlement certificate to access? (y/n)
 y

 Should the repository require clients to perform a GPG check and
 verify packages are signed by a GPG key? (y/n)
 n

 The following repository will be created:
   ID:              Custom_repo
   Name:            Custom_repo
   Path:            custom/repo/
   GPG Check        No
   Red Hat GPG Key: No
 Proceed? (y/n) y

/root/.rhui/rhui.log 

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/rhui/tools/shell.py", line 94, in safe_listen
    self.listen(clear=first_run)
  File "/usr/lib/python3.6/site-packages/rhui/tools/shell.py", line 129, in listen
    Shell.listen(self)
  File "/usr/lib/python3.6/site-packages/rhui/common/shell.py", line 186, in listen
    item.func(*args, **item.kwargs)
  File "/usr/lib/python3.6/site-packages/rhui/tools/screens/repo.py", line 677, in create_custom
    gpg_keys, rh_gpg_key)
  File "/usr/lib/python3.6/site-packages/rhui/tools/pulp_api.py", line 598, in create_custom_repo
    return self._create_repo(repo_id, name, labels, notes, checksum_type)
  File "/usr/lib/python3.6/site-packages/rhui/tools/pulp_api.py", line 618, in _create_repo
    self.set_auto_distribution(repo_dict)
  File "/usr/lib/python3.6/site-packages/rhui/tools/pulp_api.py", line 1260, in set_auto_distribution
    task_href = api.create(distro).task
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api/distributions_rpm_api.py", line 190, in create
    return self.create_with_http_info(rpm_rpm_distribution,  **kwargs)  # noqa: E501
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api/distributions_rpm_api.py", line 283, in create_with_http_info
    collection_formats=collection_formats)
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api_client.py", line 370, in call_api
    _preload_content, _request_timeout, _host)
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api_client.py", line 189, in __call_api
    raise e
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api_client.py", line 186, in __call_api
    _request_timeout=_request_timeout)
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/api_client.py", line 414, in request
    body=body)
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/rest.py", line 272, in POST
    body=body)
  File "/usr/lib/python3.6/site-packages/pulpcore/client/pulp_rpm/rest.py", line 225, in request
    raise ApiException(http_resp=r)
pulpcore.client.pulp_rpm.exceptions.ApiException: (400)
Reason: Bad Request
HTTP response headers: HTTPHeaderDict({'Server': 'gunicorn', 'Date': 'Thu, 19 Jun 2025 04:13:20 GMT', 'Connection': 'close', 'Content-Type': 'application/json', 'Vary': 'Accept, Cookie', 'Allow': 'GET, POST, HEAD, OPTIONS', 'X-Frame-Options': 'DENY', 'Content-Length': '65', 'X-Content-Type-Options': 'nosniff', 'Referrer-Policy': 'same-origin', 'Cross-Origin-Opener-Policy': 'same-origin', 'Correlation-ID': '94dde0a85c804c7d80ef87bb1c3a4bd5', 'Access-Control-Expose-Headers': 'Correlation-ID'})
HTTP response body: {"base_path":["Relative path cannot begin or end with slashes."]}